{"id":2991,"date":"2025-11-03T17:37:44","date_gmt":"2025-11-03T09:37:44","guid":{"rendered":"https:\/\/www.siproin-ic.com\/ssp2617-single-channel-h-bridge-driver-chip-copy\/"},"modified":"2025-11-03T18:10:47","modified_gmt":"2025-11-03T10:10:47","slug":"ssp1220-three-wire-rtd-measurement","status":"publish","type":"post","link":"https:\/\/www.siproin-ic.com\/ja\/ssp1220-three-wire-rtd-measurement\/","title":{"rendered":"SSP1220 3\u7dda\u5f0fRTD\u6e2c\u5b9a"},"content":{"rendered":"

\u2160\u3001 3\u7dda\u5f0fPT100\u6e29\u5ea6\u6e2c\u5b9a\u539f\u7406<\/h3>\n

3\u7dda\u5f0f\u63a5\u7d9a\u6cd5\u306e\u4e2d\u5fc3\u7684\u306a\u76ee\u7684\u306f\u3001\u30ea\u30fc\u30c9\u7dda\u306e\u62b5\u6297\u5024\u304c\u6e2c\u5b9a\u7cbe\u5ea6\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u3067\u3059\u3002PT100\u306e\u62b5\u6297\u5024\u306f\u975e\u5e38\u306b\u5c0f\u3055\u304f(100\u03a9 @ 0\u2103)\u3001\u63a5\u7d9a\u7dda\u306e\u62b5\u6297\u5024(R6\u3001R7\u3001R15\u3068\u8868\u8a18\u3055\u308c\u308b10\u5206\u306e\u6570\u03a9\uff5e\u6570\u03a9\u30013\u7dda\u5f0fRTD\u30c6\u30b9\u30c8\u306e\u56de\u8def\u56f3\u3092\u53c2\u7167)\u306b\u3088\u3063\u3066\u7121\u8996\u3067\u304d\u306a\u3044\u8aa4\u5dee\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u30023\u7dda\u5f0f\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u5de7\u5999\u306a\u56de\u8def\u8a2d\u8a08\u306b\u3088\u3063\u3066\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3057\u307e\u3059\u30023\u7dda\u5f0fRTD\u306e3\u672c\u306e\u30ea\u30fc\u30c9\u7dda\u306f\u3059\u3079\u3066\u901a\u5e38\u540c\u3058\u9577\u3055\u306a\u306e\u3067\u30013\u672c\u306e\u30ea\u30fc\u30c9\u7dda\u306e\u62b5\u6297\u304c\u7b49\u3057\u3044\u3068\u4eee\u5b9a\u3059\u308b\u3068\uff08RL1 = RL2 = RL3\u3001\u3064\u307e\u308a\u56de\u8def\u56f3\u3067\u306fR6=R7=R15\uff09\u3001SSP1220\u306e\u5185\u90e8\u30c7\u30e5\u30a2\u30eb\u96fb\u6d41\u6e90\uff08IDAC\uff09\u306f\u3001\u3053\u308c\u3089\u306e\u30ea\u30fc\u30c9\u7dda\u62b5\u6297\u306e\u5f71\u97ff\u3092\u6253\u3061\u6d88\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u6e2c\u5b9a\u539f\u7406\u3092\u8a73\u3057\u304f\u89e3\u8aac\uff1a<\/p>\n

    \n
  1. SSP1220\u306e\u5185\u90e8\u30672\u3064\u306e\u9069\u5408\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30de\u30d6\u30eb\u96fb\u6d41\u6e90\uff08IDAC1\u3068IDAC2\uff09\u3092\u4f7f\u7528\u3057\u3001\u540c\u3058\u96fb\u6d41\u3092\u51fa\u529b\u3059\u308b\uff1a\u96fb\u6d41\u6e90\u306e\u9078\u629e\u306f1mA\u672a\u6e80\u3067\u3042\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3001\u3053\u306e\u30c6\u30b9\u30c8\u306e\u96fb\u6d41\u6e90\u306e\u9078\u629e\u5024\u306f500uA\u3067\u3042\u308b\u3002<\/li>\n
  2. PT100\u306e3\u3064\u306e\u30ea\u30fc\u30c9\u62b5\u6297\u306f\u7b49\u3057\u3044\u3068\u4eee\u5b9a\u3059\u308b\uff1aR6 = R7 = R15 = Rl<\/li>\n
  3. SSP1220\u306f\u5dee\u52d5\u5165\u529b\u30da\u30a2\uff08AIN0\u3001AIN1\uff09\u3092\u901a\u3057\u3066PT100\u306e\u96fb\u5727\u3092\u6e2c\u5b9a\u3057\u307e\u3059\uff1a V\u30a4\u30f3<\/sub> = VAIN1<\/sub> - VAIN0<\/sub><\/li>\n<\/ol>\n

    \u3069\u3053\u3067VAIN1<\/sub> = IIDAC1<\/sub> x \uff08RL1<\/sub>+R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub>)+ (IIDAC1<\/sub> + I\u30a2\u30a4\u30c0\u30c3\u30af\u30c4\u30fc<\/sub>) x RL3<\/sub>, VAIN0<\/sub> = I\u30a2\u30a4\u30c0\u30c3\u30af\u30c4\u30fc<\/sub> x RL2<\/sub> + (IIDAC1<\/sub> + I\u30a2\u30a4\u30c0\u30c3\u30af\u30c4\u30fc<\/sub>) x RL3<\/sub><\/p>\n

    \u4ee5\u6765\uff1a\u79c1\u306fIDAC1<\/sub> = I\u30a2\u30a4\u30c0\u30c3\u30af\u30c4\u30fc<\/sub> = I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> AND RL1<\/sub> = RL2<\/sub> = RL3<\/sub> = RL<\/sub><\/p>\n

    \u306b\u4ee3\u5165\u3059\u308b\uff1aVIN = [I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x \uff08RL<\/sub> + R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub>)+ 2I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x RL<\/sub>]- IIDAC x RL + 2IIDAC x RL] = I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x RL<\/sub> + I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub> + 2I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x RL<\/sub> - 2I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x RL<\/sub> = I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> x R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub><\/p>\n

    \u5de7\u307f\u306a\u56de\u8def\u69cb\u6210\u306b\u3088\u308a\u3001\u5dee\u52d5\u5165\u529b\u96fb\u5727VIN\u304b\u3089\u30ea\u30fc\u30c9\u62b5\u6297\u306e\u5f71\u97ff\u3092\u5b8c\u5168\u306b\u6392\u9664\u3057\u3001PT100\u62b5\u6297\u306e\u96fb\u5727\u964d\u4e0b\u306e\u307f\u3092\u542b\u307e\u305b\u3066\u3044\u308b\u3002<\/p>\n

      \n
    1. SSP1220\u306e\u57fa\u6e96\u96fb\u5727Vref\u306f\u3001\u9ad8\u7cbe\u5ea6\u306e\u5916\u90e8\u57fa\u6e96\u62b5\u6297Rref (R5)\u3092\u4ecb\u3057\u30662\u3064\u306eIDAC\u96fb\u6d41\u3092\u30de\u30fc\u30b8\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u751f\u6210\u3055\u308c\u308b\u3002<\/li>\n
    2. \u6bd4\u7387\u6e2c\u5b9a\u3067\u306f\u3001\u6700\u7d42 ADC \u51fa\u529b\u30b3\u30fc\u30c9\u306f IDAC \u96fb\u6d41\u306e\u7d76\u5bfe\u5024\u3001\u7cbe\u5ea6\u3001\u30c9\u30ea\u30d5\u30c8\u306b\u95a2\u4fc2\u306a\u304f (Rpt100) \/ (Rref) \u306b\u6bd4\u4f8b\u3057\u3001\u540c\u6642\u306b\u30ea\u30fc\u30c9\u62b5\u6297 Rl1 \u3068 Rl2 \u306e\u5f71\u97ff\u3082\u6253\u3061\u6d88\u3057\u307e\u3059\uff1a<\/li>\n<\/ol>\n

      24\u30d3\u30c3\u30c8\u306eSSP1220\u306e\u5834\u5408\u3001\u51fa\u529b\u3055\u308c\u308b\u6570\u5024\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308b\uff1a<\/p>\n

      \u30b3\u30fc\u30c9 = (223<\/sup> - 1) x (V\u30a4\u30f3<\/sub>\/V\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/sub>) = (223<\/sup> - 1) x [R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub>\/(2 x R\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/sub>) ]<\/p>\n

      ADC \u30b3\u30fc\u30c9\u306b\u3088\u308b PT100 \u62b5\u6297\u5024\u306e\u9006\u6570\uff1a<\/p>\n

      R\u30d4\u30fc\u30c6\u30a3\u30fc\u30d2\u30e3\u30af<\/sub> = [\u30b3\u30fc\u30c9\/(2)23<\/sup>-1)] x 2 x R\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/sub><\/p>\n

      \u6700\u5f8c\u306b\u3001PT100\u306e\u62b5\u6297-\u6e29\u5ea6\u7279\u6027\u306b\u5f93\u3063\u3066\uff08\u901a\u5e38\u3001\u30ab\u30ec\u30f3\u30c0-\u30f4\u30a1\u30f3\u30fb\u30c7\u30e5\u30fc\u30bb\u30f3\u5f0f\u307e\u305f\u306f\u30c6\u30fc\u30d6\u30eb\u30fb\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u6cd5\u3092\u4f7f\u7528\uff09\u3001Rpt100\u3092\u6e29\u5ea6\u5024\u306b\u5909\u63db\u3057\u307e\u3059\uff1aT = f (Rpt100)\u3002PT100\u306e\u5834\u5408\u30010\u2103\u3001R0 = 100.00\u03a9\u3067\u3001\u62b5\u6297\u6e29\u5ea6\u4fc2\u6570\u306f\u7d04\u03b1\u22480.00385\u03a9\/\u03a9\/\u2103\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

      \u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u56de\u8def\u8a2d\u8a08<\/h3>\n

      \u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306e\u5178\u578b\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308b\u3068\u3001\u5178\u578b\u7684\u306a3\u7dda\u5f0fPT100\u306e\u63a5\u7d9a\u56de\u8def\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

      \"\"<\/p>\n

        \n
      1. \u56de\u8def\u306e\u63a5\u7d9a\u65b9\u6cd5<\/li>\n<\/ol>\n
          \n
        • PT100\u306e\u63a5\u7d9a\uff1aPT100\uff083\u7dda\u5f0f\uff09\u306f\u56de\u8def\u56f3\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/li>\n
        • \u96fb\u5727\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u751f\u6210\uff1aIDAC1\u51fa\u529b\u306fAIN2(\u5185\u90e8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u69cb\u6210\u304c\u5fc5\u8981)\u306b\u63a5\u7d9a\u3055\u308c\u3001IDAC2\u51fa\u529b\u306fAIN3(\u5185\u90e8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u69cb\u6210\u304c\u5fc5\u8981)\u306b\u63a5\u7d9a\u3055\u308c\u30012\u3064\u306eIDAC\u96fb\u6d41\u306f\u30ce\u30fc\u30c9\u3067\u5408\u6d41\u3057\u3001\u5916\u90e8\u57fa\u6e96\u62b5\u6297Rref(R5)\u3092\u4ecb\u3057\u3066\u4e00\u7dd2\u306b\u6d41\u308c\u308b\u3002REF \u306e\u3082\u3046\u4e00\u65b9\u306e\u7aef\u306f\u30a2\u30ca\u30ed\u30b0\u30fb\u30b0\u30e9\u30a6\u30f3\u30c9 AVSS \u306b\u63a5\u7d9a\u3055\u308c\u308b\u3002SSP1220\u306e\u6b63\u57fa\u6e96\u5165\u529bREFP0\u306fRREF(R5)\u306e\u4e0a\u7aef(IDAC\u30de\u30fc\u30b8\u30dd\u30a4\u30f3\u30c8)\u306b\u63a5\u7d9a\u3055\u308c\u308b\u3002SSP1220\u306e\u8ca0\u57fa\u6e96\u5165\u529bREFN0\u306fAVSS\u306b\u63a5\u7d9a\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u57fa\u6e96\u96fb\u5727VREF=(IIDAC1 + IIDAC2) * RREF\u3068\u306a\u308b\u3002<\/li>\n
        • \u4fe1\u53f7\u6e2c\u5b9a\uff1aSSP1220\u306eAIN1\u306f\u5dee\u52d5\u6b63\u5165\u529bAINP\u3068\u3057\u3066\u69cb\u6210\u3055\u308c\u3001SSP1220\u306eAIN0\u306f\u5dee\u52d5\u8ca0\u5165\u529bAINN\u3068\u3057\u3066\u69cb\u6210\u3055\u308c\u308b\u305f\u3081\u3001\u6e2c\u5b9a\u3055\u308c\u308b\u96fb\u5727\u306fAIN1\u3068AIN0\u306e\u96fb\u4f4d\u5dee\u3068\u306a\u308b\u3002<\/li>\n
        • \u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\uff1a\u30a2\u30f3\u30c1\u30a8\u30a4\u30ea\u30a2\u30b7\u30f3\u30b0\u3068\u30ce\u30a4\u30ba\u6291\u5236\u306e\u305f\u3081\u3001\u30a2\u30ca\u30ed\u30b0\u5165\u529b\uff08AIN0\u3001AIN1\u3001AIN2\uff09\u3068\u57fa\u6e96\u5165\u529b\uff08REFP0\uff09\u306e\u4e21\u65b9\u306bRC\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u5165\u529b\u30d5\u30a3\u30eb\u30bf\u30fc\uff1aR1\u3001R2\u3001C1\u3001C6\u3001C5\u3067\u69cb\u6210\u3002\u57fa\u6e96\u30d5\u30a3\u30eb\u30bf\u30fc\uff1aR3\u3001R4\u3001C2\u3001C3\u3001C4\u3067\u69cb\u6210\u3002\u30b9\u30b1\u30fc\u30eb\u6e2c\u5b9a\u306e\u7cbe\u5ea6\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u3001\u57fa\u6e96\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306f\u5165\u529b\u30d5\u30a3\u30eb\u30bf\u30fc\u3068\u4e00\u81f4\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n

          \u2162\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u9078\u629e\u3068\u30d1\u30e9\u30e1\u30fc\u30bf\u8a08\u7b97<\/h3>\n

          \u4eee\u60f3\u7684\u306a\u8a2d\u8a08\u76ee\u6a19\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3042\u308b\uff1aPT100\u30bf\u30a4\u30d7\uff1a3\u7dda\u5f0f\u3001\u6e29\u5ea6\u6e2c\u5b9a\u7bc4\u56f2\uff1a-200\u2103\uff5e+850\u2103\u3001\u96fb\u6e90\u96fb\u5727AVDD\uff1a3.3V\uff08AVSS\uff1d0V\uff09\u3001DAC\u96fb\u6d41\uff1a500\u03bcA\uff08\u5404\u30c1\u30e3\u30f3\u30cd\u30eb\uff09\u3001\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\uff1a20SPS\uff08\u6700\u9069\u306a\u30ce\u30a4\u30ba\u6027\u80fd\u306e\u305f\u3081\uff09\u3002<\/p>\n

            \n
          1. \u57fa\u6e96\u62b5\u6297\uff08Rref\uff09\u306e\u9078\u629e\u3068\u8a08\u7b97<\/li>\n<\/ol>\n

            Rref\u306f\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u7cbe\u5ea6\u306e\u4e2d\u6838\u3092\u306a\u3059\u3002\u6a5f\u80fd\u3067\u3059\uff1aADC \u306e\u57fa\u6e96\u96fb\u5727 Vref \u3092\u751f\u6210\u3057\u3001\u305d\u306e\u7cbe\u5ea6\u3068\u5b89\u5b9a\u6027\u304c\u6e2c\u5b9a\u7d50\u679c\u3092\u76f4\u63a5\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n

            \u62b5\u6297\u306e\u8a08\u7b97\uff1a<\/p>\n

            ADC \u306e\u30ec\u30f3\u30b8\u3092\u6700\u5927\u306b\u3057\u3001PGA \u306e\u30b3\u30e2\u30f3\u30e2\u30fc\u30c9\u96fb\u5727\u8981\u4ef6\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001Vref \u306f\u901a\u5e38\u96fb\u6e90\u96fb\u5727\u306e\u7d04\u534a\u5206\u306b\u8a2d\u5b9a\u3055\u308c\u308b\u3002\u3053\u306e\u8a2d\u8a08\u3067\u306f\u3001AVDD = 3.3V\u3001\u30bf\u30fc\u30b2\u30c3\u30c8 VREF \u306f\u7d04 1.65V \u3067\u3042\u308b\u3002<\/p>\n

            I\u30a2\u30a4\u30c0\u30c3\u30af<\/sub> = I_IDAC1 + I_IDAC2 = 500uA + 500uA = 1mA<\/p>\n

            R\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/sub> = V\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/sub> \/(IIDAC1<\/sub> + I\u30a2\u30a4\u30c0\u30c3\u30af\u30c4\u30fc<\/sub>) = 1.65V\/1mA = 1.65k\u03a9<\/p>\n

            \u516c\u79f0\u50241.65k\u03a9\u306e\u62b5\u6297\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u898b\u3064\u304b\u3089\u306a\u3051\u308c\u3070\u30011.62k\u03a9 \u307e\u305f\u306f 1.69k\u03a9 \u3082\u8a31\u5bb9\u3067\u304d\u308b\u8fd1\u4f3c\u5024\u3067\u3042\u308b\u3002<\/p>\n

            \u9078\u8003\u6761\u4ef6<\/p>\n

            \u7cbe\u5ea6\uff1a\u5c11\u306a\u304f\u3068\u3082\u00b10.1%\u3001\u9ad8\u7cbe\u5ea6\u7528\u9014\u306b\u306f\u00b10.05%\u4ee5\u4e0a\u3092\u63a8\u5968\u3002<\/p>\n

            \u6e29\u5ea6\u30d6\u30ea\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a\u975e\u5e38\u306b\u4f4e\u304f\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u00b15ppm\/\u2103\u307e\u305f\u306f\u00b110ppm\/\u2103\u306e\u7cbe\u5bc6\u30d5\u30a3\u30eb\u30e0\u62b5\u6297\u3092\u63a8\u5968\u3002<\/p>\n

            \u9577\u671f\u5b89\u5b9a\u6027\uff1a\u9ad8\u3044<\/p>\n

            \u901a\u5e38\u306e1%\u3001100ppm\/\u2103\u306e\u30c1\u30c3\u30d7\u62b5\u6297\u306f\u7d76\u5bfe\u306b\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n

              \n
            1. IDAC\u96fb\u6d41\u304a\u3088\u3073PGA\u30b2\u30a4\u30f3\u30fb\u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<\/ol>\n

              IDAC\u96fb\u6d41\uff1a500\u03bcA\u3092\u9078\u629e\u3002\u3053\u306e\u5024\u306f\u3001\u6d88\u8cbb\u96fb\u529b\u3001\u81ea\u5df1\u767a\u71b1\u52b9\u679c\u3001\u304a\u3088\u3073\u4fe1\u53f7\u632f\u5e45\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u3046\u307e\u304f\u53d6\u308c\u3066\u3044\u307e\u3059\u3002\u96fb\u6d41\u304c\u5c0f\u3055\u3059\u304e\u308b\u3068\u3001\u4fe1\u53f7\u304c\u5f31\u304f\u30ce\u30a4\u30ba\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u96fb\u6d41\u304c\u5927\u304d\u3059\u304e\u308b\u3068\u3001PT100\u304c\u81ea\u5df1\u767a\u71b1\u3057\u305f\u308a\u3001IDAC\u6e96\u62e0\u96fb\u5727\u3092\u8d85\u3048\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

              PGA\u30b2\u30a4\u30f3\u306e\u9078\u629e\uff1aPT100\u306f\u96fb\u5727\u304c\u5c0f\u3055\u3044\uff08\u4f8b\u3048\u3070500\u03bcA\u00d7100\u03a9\uff1d50mV\uff09\u304c\u3001\u6bd4\u7387\u6e2c\u5b9a\uff08\u57fa\u6e96\u96fb\u5727\u3082IDAC\u306e\u3082\u306e\uff09\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u3001\u98fd\u548c\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u5897\u5e45\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\u30b2\u30a4\u30f3\u9078\u629e\u306f1X\u3068\u306a\u308b\u3002<\/p>\n

                \n
              1. \u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\u306e\u90e8\u54c1\u9078\u629e<\/li>\n<\/ol>\n

                \u30d5\u30a3\u30eb\u30bf\u30fc\u62b5\u6297\uff08R1\u3001R2\u3001R3\u3001R4\uff09\uff1a\u901a\u5e381k\u03a9\u304c\u9078\u629e\u3055\u308c\u308b\u3002\u3053\u306e\u5024\u306f\u3001\u52b9\u679c\u7684\u306b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u306e\u306b\u5341\u5206\u5927\u304d\u304f\u3001\uff08\u5165\u529b\u30d0\u30a4\u30a2\u30b9\u96fb\u6d41\u306b\u3088\u308b\uff09\u5165\u529b\u3067\u306e\u5927\u304d\u306a\u30aa\u30d5\u30bb\u30c3\u30c8\u96fb\u5727\u3092\u907f\u3051\u308b\u306e\u306b\u5341\u5206\u5c0f\u3055\u3044\u3002\u307e\u305f\u3001\u96fb\u6d41\u5236\u9650\u4fdd\u8b77\u3068\u3057\u3066\u3082\u6a5f\u80fd\u3059\u308b\u3002<\/p>\n

                \u5dee\u52d5\u30d5\u30a3\u30eb\u30bf\u30fb\u30b3\u30f3\u30c7\u30f3\u30b5\uff08C1\u3001C2\uff09\uff1a\u62b5\u6297\u3068\u3068\u3082\u306b\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30ec\u30fc\u30c820SPS\u306e\u5834\u5408\u3001\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306f\u6570\u5341Hz\u306b\u8a2d\u5b9a\u3067\u304d\u308b\u3002 fc = 1 \/ (2\u03c0 * (R1+R2) * C1)\u3002R1+R2=2k\u03a9\u3067fc\u224816Hz\u3068\u4e88\u60f3\u3055\u308c\u308b\u5834\u5408\u3001C1\u22481 \/ (2* 2000 * 16) \u2248 4.7\u03bcF\u3002\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3088\u308a\u5e83\u3044\u30ce\u30a4\u30ba\u9664\u53bb\u5e2f\u57df\u5e45\u3092\u5f97\u308b\u305f\u3081\u306b100nF\uff080.1\u03bcF\uff09\u304c\u3088\u304f\u4f7f\u308f\u308c\u308b\u3002\u30bf\u30a4\u30d7C0G\uff08NPO\uff09\u30bb\u30e9\u30df\u30c3\u30af\u30fb\u30b3\u30f3\u30c7\u30f3\u30b5\u306f\u3001\u8a98\u96fb\u7387\u304c\u5b89\u5b9a\u3057\u3001\u96fb\u5727\u4fc2\u6570\u304c\u4f4e\u304f\u3001\u5fae\u5c0f\u97f3\u97ff\u52b9\u679c\u304c\u4f4e\u3044\u305f\u3081\u63a8\u5968\u3055\u308c\u308b\u3002<\/p>\n

                \u30b3\u30e2\u30f3\u30e2\u30fc\u30c9\u30d5\u30a3\u30eb\u30bf\u30fc\u4ed8\u304d\u30b3\u30f3\u30c7\u30f3\u30b5\uff08C5\u3001C6\u3001C3\u3001C4\uff09\uff1a\u5dee\u52d5\u30b3\u30f3\u30c7\u30f3\u30b5\u306e\u30df\u30b9\u30de\u30c3\u30c1\u304c\u904e\u5ea6\u306e\u30b3\u30e2\u30f3\u30e2\u30fc\u30c9\u30fb\u30ce\u30a4\u30ba\u3092\u5dee\u52d5\u30ce\u30a4\u30ba\u306b\u5909\u63db\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3002<\/p>\n

                \u2163\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8a2d\u5b9a<\/h3>\n
                  \n
                1. \u30de\u30b9\u30bf\u30fc\u30fb\u30ed\u30b8\u30c3\u30af\uff1a<\/strong><\/li>\n<\/ol>\n

                  float SSP1x20_read_temperature(void)<\/p>\n

                  {<\/p>\n

                  uint32_t ADC_data\uff1b<\/p>\n

                  uint32_t ADC_temp1\uff1b<\/p>\n

                  \/\/SSP1x20_read_register(SSP1x20_REG0, 4, &Read_REGTab[0])\uff1b<\/p>\n

                  Write_REGTab[0] = SSP1x20_MUX_AIN0_AIN1 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_ON\uff1b<\/p>\n

                  Write_REGTab[1]=SSP1x20_DR_20SPS|SSP1x20_MODE_NORMAL|SSP1x20_SC|SSP1x20_TS_ON| SSP1x20_BCS_OFF;<\/p>\n

                  Write_REGTab[2]=SSP1x20_VREF_2048|SSP1x20_REJECT_OFF|SSP1x20_PSW_OFF | SSP1x20_IDAC_1000uA;<\/p>\n

                  Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                  SSP1x20_WriteRegister(SSP1x20_REG0, 4, &Write_REGTab[0])\uff1b<\/p>\n

                  SSP1x20_SendCommand(SSP1x20_CMD_START)\uff1b<\/p>\n

                  spi_adc_cs_low()\uff1b<\/p>\n

                  while (ADC_DRDY_GAIN == 1);\/\/SSP1x20_DRDYM_DRDY<\/p>\n

                    \n
                  1. \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e3b\u306a\u69cb\u6210\u3068\u8aac\u660e<\/strong><\/li>\n<\/ol>\n
                      \n
                    • \u30ec\u30b8\u30b9\u30bf0\u306e\u8a2d\u5b9a\uff1aMUX\u3068\u30b2\u30a4\u30f3<\/strong><\/li>\n<\/ul>\n

                      Write_REGTab[0] = SSP1x20_MUX_AIN0_AIN1 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_ON\uff1b<\/p>\n\n\n\n\n\n\n
                      \u30d3\u30c3\u30c8<\/td>\n\u69cb\u6210<\/td>\n\u6a5f\u80fd<\/td>\n\u8aac\u660e<\/td>\n<\/tr>\n
                      BIT7\u301cBIT4<\/td>\nMUX_AIN0_AIN1<\/td>\n\u5dee\u52d5\u5165\u529b\u30c1\u30e3\u30f3\u30cd\u30eb\u9078\u629e<\/td>\nAIN0 - AIN1 \u2192 PT100\u96fb\u5727\u6e2c\u5b9a\u7528<\/td>\n<\/tr>\n
                      BIT3~BIT1<\/td>\nGAIN_1\uff081\u500d\u30b2\u30a4\u30f3\uff09<\/td>\n\u30b2\u30a4\u30f3\u8a2d\u5b9a<\/td>\n1\u00d7\uff08Vin\u22521V\u306a\u306e\u3067\u5897\u5e45\u306e\u5fc5\u8981\u306a\u3057\uff09<\/td>\n<\/tr>\n
                      \u30d3\u30c3\u30c80<\/td>\nPGA_BYPASS_ON<\/td>\nPGA\u30d0\u30a4\u30d1\u30b9<\/td>\n\u4fe1\u53f7\u306e\u6b6a\u307f\u3092\u9632\u3050\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30d6\u30eb\u30fb\u30b2\u30a4\u30f3\u30fb\u30a2\u30f3\u30d7\u3092\u30aa\u30d5\u306b\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                        \n
                      • \u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30ec\u30b8\u30b9\u30bf1\uff1a\u30b5\u30f3\u30d7\u30eb\u30fb\u30ec\u30fc\u30c8\u3068\u30e2\u30fc\u30c9<\/strong><\/li>\n<\/ul>\n

                        Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_OFF | SSP1x20_BCS_OFF\uff1b<\/p>\n\n\n\n\n\n\n\n
                        \u30d3\u30c3\u30c8<\/td>\n\u69cb\u6210<\/td>\n\u6a5f\u80fd<\/td>\n\u8aac\u660e<\/td>\n<\/tr>\n
                        BIT7\u301cBIT5<\/td>\nDR_20SPS<\/td>\n\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8<\/td>\n20\u56de\/\u79d2 \u2192 \u4f4e\u901f\u306e\u6e29\u5ea6\u5909\u5316\u306b\u6700\u9069<\/td>\n<\/tr>\n
                        BIT4~BIT3<\/td>\nMODE_NORMAL<\/td>\n\u901a\u5e38\u306e\u4f5c\u696d\u30e2\u30fc\u30c9<\/td>\n\u30b7\u30f3\u30b0\u30eb\u3067\u3082\u9023\u7d9a\u3067\u3082\u306a\u3044<\/td>\n<\/tr>\n
                        \u30d3\u30c8\u30fc<\/td>\nSC<\/td>\n\u30bb\u30eb\u30d5\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u53ef\u80fd<\/td>\n\u7cbe\u5ea6\u306e\u5411\u4e0a\uff08\u63a8\u5968\uff09<\/td>\n<\/tr>\n
                        BIT1<\/td>\nTS_OFF<\/td>\n\u5185\u90e8\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u3092\u7121\u52b9\u306b\u3059\u308b<\/td>\nTS_ON \u5185\u90e8\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u3092\u30aa\u30f3\u306b\u3057\u3001\u5916\u90e8\u6e29\u5ea6\u3092\u6e2c\u5b9a\u3059\u308b\u8a2d\u5b9a\u306f\u6a5f\u80fd\u3057\u306a\u3044\uff08\u3053\u306e\u8a2d\u5b9a\u304c\u6700\u3082\u512a\u5148\u3055\u308c\u308b\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        \u00a0<\/strong><\/p>\n

                          \n
                        • \u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30ec\u30b8\u30b9\u30bf2\uff1aIDAC\u306b\u3088\u308b\u57fa\u6e96\u96fb\u5727<\/strong><\/li>\n<\/ul>\n

                          Write_REGTab[2] = SSP1x20_VREF_2048 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_500uA\uff1b<\/p>\n\n\n\n\n\n\n\n
                          \u30d3\u30c3\u30c8<\/td>\n\u69cb\u6210<\/td>\n\u6a5f\u80fd<\/td>\n\u8aac\u660e<\/td>\n<\/tr>\n
                          BIT7\u301cBIT6<\/td>\nVREF_2048<\/td>\n\u5916\u90e8\u57fa\u6e96\u96fb\u5727<\/td>\n\u5916\u90e8R_REFR_REF\u3092\u4f7f\u7528\u3057\u3066\u57fa\u6e96\u96fb\u5727\u3092\u751f\u6210\u3059\u308b\uff08\u4f8b\u3048\u30701.65k\u03a9\uff09\u3002<\/td>\n<\/tr>\n
                          BIT5\u301cBIT4<\/td>\nREJECT_OFF<\/td>\n\u30ce\u30c3\u30c1\u30d5\u30a3\u30eb\u30bf\u30fc\u306a\u3057<\/td>\n\u96fb\u6e90\u5468\u6ce2\u6570\u5e72\u6e09\u8010\u6027\u306f\u4e0d\u8981<\/td>\n<\/tr>\n
                          \u30d3\u30c3\u30c83<\/td>\nPSW_OFF<\/td>\n\u96fb\u6e90\u30b9\u30a4\u30c3\u30c1\u3092\u6709\u52b9\u306b\u3057\u306a\u3044<\/td>\n\u901a\u5e38\u306e\u96fb\u529b\u4f9b\u7d66\u3092\u7dad\u6301\u3059\u308b<\/td>\n<\/tr>\n
                          BIT2\u301cBIT0<\/td>\nIDAC_500uA<\/td>\n\u52b1\u78c1\u96fb\u6d41<\/td>\n3.9k\u03a9\u00d71mA\uff1d3.9V\uff1e3.3V\u306e\u904e\u96fb\u5727\u3092\u907f\u3051\u308b\u305f\u3081500\u03bcA\u306b\u8a2d\u5b9a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          \u00a0<\/strong>\u00a0<\/strong><\/p>\n\n\n\n\n\n\n
                          \u30d3\u30c3\u30c8<\/td>\n\u69cb\u6210<\/td>\n\u6a5f\u80fd<\/td>\n\u8aac\u660e<\/td>\n<\/tr>\n
                          BIT7\u301cBIT5<\/td>\nIDAC1_AIN2<\/td>\nIDAC1\u51fa\u529b\u2192AIN2<\/td>\n\u52b1\u78c1\u96fb\u6d41\u306fPT100\u306e\u4e0a\u7aef\u3092\u6d41\u308c\u308b\u3002<\/td>\n<\/tr>\n
                          BIT4~BIT2<\/td>\nIDAC2_AIN3<\/td>\nIDAC2\u51fa\u529b\u3092AIN3\u3078<\/td>\n\u30ea\u30fc\u30c9\u62b5\u6297\u3092\u6253\u3061\u6d88\u3059\u305f\u3081\u306b\u30d1\u30b9\u306b\u623b\u308b<\/td>\n<\/tr>\n
                          BIT1<\/td>\nDRDYM_DRDY<\/td>\nDRDY\u30e2\u30fc\u30c9<\/td>\nDRDY\u4fe1\u53f7\u3067\u5909\u63db\u5b8c\u4e86\u3092\u77e5\u3089\u305b\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          \u00a0<\/strong><\/p>\n

                          (4) \u30ec\u30b8\u30b9\u30bf3\uff1aIDAC\u30eb\u30fc\u30c8\u30fb\u30c1\u30e3\u30cd\u30eb\u3092DRDY\u3067\u69cb\u6210\u3059\u308b<\/strong><\/p>\n

                            \n
                          1. 3\u7dda\u5f0fPT100\u30b3\u30a2\uff1a<\/strong><\/li>\n<\/ol>\n

                            \u73fe\u5728\u306e\u9032\u8def<\/p>\n

                              \n
                            • IDAC1 \u2192 ain2 \u2192 PT100 \u2192 ain1<\/li>\n
                            • IDAC2 \u2192 AIN3 \u2192 AIN1\uff08\u30ea\u30bf\u30fc\u30f3\uff09<\/li>\n
                            • 2\u3064\u306e\u96fb\u6d41\u304c\u7b49\u3057\u3044 \u2192 R_LEAD2R_LEAD2\u306e\u96fb\u5727\u964d\u4e0b\u3092\u76f8\u6bba\u3059\u308b<\/li>\n<\/ul>\n

                              uint32_t<\/strong> raw_u24 = SSP1x20_read_data_drdy()\uff1b<\/p>\n

                               <\/p>\n

                              SSP1220\u51fa\u529b 24\u30d3\u30c3\u30c8\u30c7\u30fc\u30bf<\/strong>\u3057\u304b\u3057\u3001MCU\u306f\u901a\u5e3832\u30d3\u30c3\u30c8\u3067\u8aad\u307f\u53d6\u308b\uff08SPI\u306f\u4e00\u5ea6\u306b4\u30d0\u30a4\u30c8\u3092\u8aad\u307f\u53d6\u308b\uff09\u3002<\/p>\n

                               <\/p>\n

                              \u3082\u3057<\/strong> (raw < 0) raw = -raw\uff1b<\/p>\n

                              PT100 \u96fb\u5727 \u306f\u5e38\u306b\u6b63 <\/strong>(AIN0\u304b\u3089AIN1\u306b\u96fb\u6d41\u304c\u6d41\u308c\u308b\uff09\u3002<\/p>\n

                              raw < 0\u306a\u3089 AIN0\u3068AIN1\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30fb\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u9006\u306b\u306a\u308b\u3002<\/strong><\/p>\n

                              printf(\"Raw: %ld, R=%.3f \u03a9, Temp=%.2f \u00b0Cr}n\",raw, R_pt100, temperature)\uff1b<\/p>\n

                              \u30d7\u30ea\u30f3\u30c8 \u5143\u306e\u30b3\u30fc\u30c9\u5024\u304b\u3089\u62b5\u6297\u5024\u3092\u8a08\u7b97\u3057\u3001\u6700\u7d42\u7684\u306a\u6e29\u5ea6\u3092\u7b97\u51fa\u3059\u308b\u3002<\/strong> \u30c7\u30d0\u30c3\u30b0\u3057\u3084\u3059\u3044\u3088\u3046\u306b<\/p>\n

                              Raw\u304c\u30de\u30a4\u30ca\u30b9\u306e\u5834\u5408\u2192\u69cb\u6210\u304c\u9006\u306b\u306a\u308b<\/p>\n

                              R\uff1e1400\u03a9\u306e\u5834\u5408\u2192IDAC\u307e\u305f\u306fRref\u306e\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u306a\u3044\u3053\u3068\u3092\u793a\u3059<\/p>\n

                              Temp = -999 \u2192 R\u5024\u304c\u59a5\u5f53\u306a\u7bc4\u56f2\u5916\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u3002<\/p>\n

                               <\/p>\n

                              \u2164\u3001\u6e2c\u5b9a\u624b\u9806\u3068\u7d50\u679c<\/h3>\n
                                \n
                              1. \u4e21\u7aef\u306ePT100\u96fb\u5727\u6e2c\u5b9a\u30d7\u30ed\u30b0\u30e9\u30e0\uff1a<\/strong><\/li>\n<\/ol>\n

                                void SSP1x20_ADC_MeasurePt100(void)<\/p>\n

                                {<\/p>\n

                                float V_ref = 2.048; \/\/ \u5185\u90e8\u57fa\u6e96\u96fb\u5727 2.048V<\/p>\n

                                \/\/\u591a\u70b9\u5358\u4e00\u96fb\u5727\u6e2c\u5b9a\uff1b<\/p>\n

                                Write_REGTab[0] = SSP1x20_MUX_AIN1_AIN0 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_OFF\uff1b<\/p>\n

                                Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_OFF | SSP1x20_BCS_OFF\uff1b<\/p>\n

                                Write_REGTab[2] = SSP1x20_VREF_REF0 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_500uA\uff1b<\/p>\n

                                Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                SSP1x20_WriteRegister(SSP1x20_REG0, 4, &Write_REGTab[0])\uff1b<\/p>\n

                                 <\/p>\n

                                printf(\"Write_REGTab[0]=%x\\rn\", Write_REGTab[0])\uff1b<\/p>\n

                                printf(\"Write_REGTab[1]=%x\\rn\", Write_REGTab[1])\uff1b<\/p>\n

                                printf(\"Write_REGTab[2]=%x\\rn\", Write_REGTab[2])\uff1b<\/p>\n

                                printf(\"Write_REGTab[3]=%x\\rn\", Write_REGTab[3])\uff1b<\/p>\n

                                \u4e00\u65b9<\/p>\n

                                {<\/p>\n

                                SSP1x20_SendCommand(SSP1x20_CMD_START); \/\/ \u9023\u7d9a\u6e2c\u5b9a\u304c\u6709\u52b9\u306a\u5834\u5408\u3001\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306f 1 \u56de\u306e\u307f\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n

                                HAL_Delay(100)\uff1b<\/p>\n

                                spi_adc_cs_low()\uff1b<\/p>\n

                                }<\/p>\n

                                \u00a0<\/strong><\/p>\n

                                SSP1220\u30c6\u30b9\u30c8\u7d50\u679c<\/strong><\/p>\n

                                \"\"<\/p>\n

                                  \n
                                1. SSP1220\u5185\u90e8\u6e29\u5ea6\u6e2c\u5b9a<\/strong><\/li>\n<\/ol>\n

                                  \u5185\u90e8\u6e29\u5ea6\u30c6\u30b9\u30c8\u6a5f\u80fd<\/p>\n

                                  float SSP1x20_read_temperature(void)<\/p>\n

                                  {<\/p>\n

                                  uint32_t ADC_data\uff1b<\/p>\n

                                  uint32_t ADC_temp1\uff1b<\/p>\n

                                   <\/p>\n

                                  \/\/SSP1x20_read_register(SSP1x20_REG0, 4, &Read_REGTab[0])\uff1b<\/p>\n

                                  Write_REGTab[0] = SSP1x20_MUX_AIN0_AIN1 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_ON\uff1b<\/p>\n

                                  Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_ON | SSP1x20_BCS_OFF\uff1b<\/p>\n

                                  Write_REGTab[2] = SSP1x20_VREF_2048 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_1000uA\uff1b<\/p>\n

                                  Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                  SSP1x20_WriteRegister(SSP1x20_REG0, 4, &Write_REGTab[0])\uff1b<\/p>\n

                                   <\/p>\n

                                  SSP1x20_SendCommand(SSP1x20_CMD_START)\uff1b<\/p>\n

                                  spi_adc_cs_low()\uff1b<\/p>\n

                                   <\/p>\n

                                  while (ADC_DRDY_GAIN == 1);\/\/SSP1x20_DRDYM_DRDY<\/p>\n

                                   <\/p>\n

                                  \u5185\u90e8\u6e29\u5ea6\u30c6\u30b9\u30c8\u306e\u69cb\u6210\u8a73\u7d30\uff1a<\/strong><\/p>\n

                                  \u00a0<\/strong>Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_ON | SSP1x20_BCS_OFF\uff1b<\/p>\n

                                    \n
                                  • SSP1x20_TS_ON\uff1a \u5185\u90e8\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u3092\u6709\u52b9\u306b\u3059\u308b<\/strong> (\u30af\u30ea\u30c6\u30a3\u30ab\u30eb)\u306e\u5834\u5408\u3001\u3053\u306e\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u6700\u3082\u512a\u5148\u3055\u308c\u307e\u3059\u3002<\/li>\n
                                  • SSP1x20_SC\uff1a\u30bb\u30eb\u30d5\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\uff08\u63a8\u5968\uff09<\/li>\n
                                  • 20SPS<\/strong>:\u4f4e\u901f\u30fb\u9ad8\u7cbe\u5ea6\u3001\u6e29\u5ea6\u6e2c\u5b9a\u306b\u6700\u9069<\/li>\n<\/ul>\n

                                    Write_REGTab[2] = SSP1x20_VREF_2048 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_1000uA\uff1b<\/p>\n

                                      \n
                                    • SSP1x20_VREF_2048\uff1a\u4f7f\u7528\u3059\u308b \u5185\u90e82.048V\u57fa\u6e96\u96fb\u5727<\/strong> (\u5916\u90e8REF0\u3067\u306f\u306a\u3044\uff09\n
                                        \n
                                      • \u5185\u90e8\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u306f \u7d76\u5bfe\u96fb\u5727\u51fa\u529b<\/strong>, a \u56fa\u5b9a\u57fa\u6e96\u96fb\u5727 <\/strong>\u3092\u4f7f\u7528\u3057\u3066\u6e29\u5ea6\u3092\u5909\u63db\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n<\/ul>\n<\/li>\n
                                      • IDAC_1000uA<\/strong>:IDAC\u306f\u6709\u52b9\u3060\u304c\u3001 TS_ON\u30e2\u30fc\u30c9\u306eIDAC\u306f\u5185\u90e8\u6e29\u5ea6\u6e2c\u5b9a\u306b\u5f71\u97ff\u3057\u306a\u3044<\/strong> (\u7121\u8996\u3067\u304d\u308b\uff09\u3002<\/li>\n<\/ul>\n

                                        Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                          \n
                                        • IDAC\u30d4\u30f3\u3068DRDY\u3092\u69cb\u6210\u3059\u308b\u3002 \u5185\u90e8\u6e29\u5ea6\u306e\u6e2c\u5b9a\u306b\u5f71\u97ff\u306f\u306a\u3044<\/strong> (\u30ec\u30b8\u306f\u305d\u306e\u307e\u307e\u3067\uff09\u3002<\/li>\n
                                        • 2 \u5909\u63db\u3092\u958b\u59cb\u3057\u3001DRDY\u3092\u5f85\u3064<\/strong><\/li>\n<\/ul>\n

                                          SSP1x20_SendCommand(SSP1x20_CMD_START); SPI_ADC_CS_LOW()\uff1b\u540c\u6642\u306b<\/strong> (adc_ddy_gain == 1); \/\/ \u7b49\u5f85 drdy \u53d8\u4f4e<\/p>\n

                                            \n
                                          • START\u30b3\u30de\u30f3\u30c9\u3092\u9001\u4fe1\u3057\u3001\u9023\u7d9a\u30c8\u30e9\u30f3\u30b8\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3059\u308b\u3002<\/li>\n
                                          • \u5f85\u3064 DRDY\u30d4\u30f3\u304cLow\u306b\u306a\u308b<\/strong>\u30c7\u30fc\u30bf\u306e\u6e96\u5099\u304c\u3067\u304d\u305f\u3053\u3068\u3092\u793a\u3059<\/li>\n<\/ul>\n

                                            \u5ba4\u5185\u5ba4\u6e29\u306e\u6e2c\u5b9a\u7d50\u679c\u3092\u4e0b\u56f3\u306b\u793a\u3059\uff1a<\/p>\n

                                            \"\"<\/p>\n

                                            3.\u5916\u90e8\u6e29\u5ea6\u6e2c\u5b9a\uff08\u65b9\u6cd51\u3001\u7c21\u6613\u4fc2\u65700.385\u8a08\u7b97\uff09<\/h2>\n

                                            \u5916\u90e8\u6e29\u5ea6\u30c6\u30b9\u30c8\u95a2\u9023\u30b3\u30fc\u30c9\uff1a<\/p>\n

                                            uint32_t ADC_gain_value = 0; \/\/ \u8aad\u307f\u51fa\u3057\u30c7\u30fc\u30bf<\/p>\n

                                            uint32_t ADC_value = 0; \/\/ \u30c7\u30fc\u30bf\u5024\u3092\u6e2c\u5b9a\u3059\u308b<\/p>\n

                                            float tmpPt100=0\uff1b<\/p>\n

                                            float RTD=0\uff1b<\/p>\n

                                            void SSP1x20_ADC_Measure(void)<\/p>\n

                                            {<\/p>\n

                                             <\/p>\n

                                            printf(\"\uffe4\u591a\u70b9\u5358\u4e00\u96fb\u5727\u6e2c\u5b9a\uffe4\")\uff1b<\/p>\n

                                            Write_REGTab[0] = SSP1x20_MUX_AIN1_AIN0 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_OFF; SSP1x20_MUX_AIN1_AIN0 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9 AIN1 AIN0 \u306f\u5b9f\u969b\u306e\u56de\u8def\u56f3\u306b\u57fa\u3065\u3044\u3066\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

                                            Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_OFF | SSP1x20_BCS_OFF\uff1b<\/p>\n

                                            Write_REGTab[2] = SSP1x20_VREF_REF0 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_500uA\uff1b<\/p>\n

                                            Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                            SSP1x20_WriteRegister(SSP1x20_REG0, 4, &Write_REGTab[0])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[0]=%x\\rn\", Write_REGTab[0])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[1]=%x\\rn\", Write_REGTab[1])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[2]=%x\\rn\", Write_REGTab[2])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[3]=%x\\rn\", Write_REGTab[3])\uff1b<\/p>\n

                                            \u4e00\u65b9<\/p>\n

                                            {<\/p>\n

                                             <\/p>\n

                                            SSP1x20_SendCommand(SSP1x20_CMD_START); \u9023\u7d9a\u6e2c\u5b9a\u304c\u6709\u52b9\u306a\u5834\u5408\u3001\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306f 1 \u56de\u306e\u307f\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n

                                            HAL_Delay(100)\uff1b<\/p>\n

                                            spi_adc_cs_low()\uff1b<\/p>\n

                                            ADC_gain_value =0\uff1b<\/p>\n

                                             <\/p>\n

                                            ADC_gain_value = SPI_ADC_ReadByte()\uff1b<\/p>\n

                                            ADC_gain_value = (ADC_gain_value << 8) | SPI_ADC_ReadByte()\uff1b<\/p>\n

                                            ADC_gain_value = (ADC_gain_value << 8) | SPI_ADC_ReadByte()\uff1b<\/p>\n

                                             <\/p>\n

                                            spi_adc_cs_high()\uff1b<\/p>\n

                                             <\/p>\n

                                            RTD = 1650*( (float)ADC_gain_value \/(0x3fffff));\/\/\u57fa\u6e96\u62b5\u62971650\u30aa\u30fc\u30e0<\/p>\n

                                            tmpPt100 = (RTD-100)\/0.38\uff1b<\/p>\n

                                            __NOP()\uff1b<\/p>\n

                                             <\/p>\n

                                            printf(\"R=%.3f \u03a9, Temp=%.2f \u00b0Crrn\",RTD, tmpPt100 )\uff1b<\/p>\n

                                            }<\/p>\n

                                            \u6c37\u6c34\u6df7\u5408\u7269\u306e\u6e29\u5ea6\u30923\u7dda\u5f0fRTD\u3067\u6e2c\u5b9a\u3057\u305f\u7d50\u679c\u3092\u4e0b\u56f3\u306b\u793a\u3059\uff1a<\/p>\n

                                            \"\" \"\"<\/strong><\/p>\n

                                            \u5916\u90e8\u6e29\u5ea6\u6e2c\u5b9a\uff08\u65b9\u6cd52\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u30fb\u30f4\u30a1\u30f3\u30fb\u30c7\u30e5\u30fc\u30bb\u30f3\u306e\u5f0f\u3067\u8a08\u7b97\uff09\u306f\u3088\u308a\u6b63\u78ba\u3067\u3042\u308b\u3002<\/strong><\/p>\n

                                             <\/p>\n

                                            \u30de\u30b9\u30bf\u30fc\u30b3\u30fc\u30c9<\/p>\n

                                            \/\/\u9ad8\u7cbe\u5ea6RTD\u2192\u6e29\u5ea6<\/p>\n

                                            static float rtd_to_temperature_iec60751(float rtd)<\/p>\n

                                            {<\/p>\n

                                            if (rtd < 0.0f) return -999.0f; \/\/ \u4e0d\u6b63\u306a\u5024<\/p>\n

                                             <\/p>\n

                                            float t = (rtd - R0_PT100) \/ 0.385f; \/\/ \u521d\u671f\u63a8\u6e2c\u5024<\/p>\n

                                             <\/p>\n

                                            if (rtd <= R0_PT100) {\u3002<\/p>\n

                                            \/\/T < = 0\u2103\uff1a\u5b8c\u5168\u306a\u5f0f\u3092\u4f7f\u7528\u3059\u308b<\/p>\n

                                            for (int i = 0; i < 10; i++) {.<\/p>\n

                                            float rt_calc = R0_PT100 * (1.0f + A_COEFF*t + B_COEFF*t*t + C_COEFF*(t - 100.0f)*t*t*t)\uff1b<\/p>\n

                                            float dr_dt = R0_PT100 * (A_COEFF + 2.0f*B_COEFF*t + C_COEFF*(4.0f*t*t - 300.0f*t*t))\uff1b<\/p>\n

                                            float error = rt_calc - rtd\uff1b<\/p>\n

                                            t -= error \/ dr_dt\uff1b<\/p>\n

                                            if (fabsf(error) < 0.001f) break\uff1b<\/p>\n

                                            }<\/p>\n

                                            } else {<\/p>\n

                                            \/\/ T >= 0\u00b0C:: \u7c21\u7565\u5316\u3057\u305f\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n

                                            for (int i = 0; i < 10; i++) {.<\/p>\n

                                            float rt_calc = R0_PT100 * (1.0f + A_COEFF*t + B_COEFF*t*t)\uff1b<\/p>\n

                                            float dr_dt = R0_PT100 * (A_COEFF + 2.0f*B_COEFF*t)\uff1b<\/p>\n

                                            float error = rt_calc - rtd\uff1b<\/p>\n

                                            t -= error \/ dr_dt\uff1b<\/p>\n

                                            if (fabsf(error) < 0.001f) break\uff1b<\/p>\n

                                            }<\/p>\n

                                            }<\/p>\n

                                            t\u3092\u8fd4\u3059\uff1b<\/p>\n

                                            }<\/p>\n

                                            \/**<\/p>\n

                                            * \u30a2\u30ca\u30ed\u30b0\u30c1\u30e3\u30f3\u30cd\u30ebADC\u6e2c\u5b9a\uff08\u5916\u90e8\u6e29\u5ea6\u6e2c\u5b9a\uff09<\/p>\n

                                            * @param None<\/p>\n

                                            * \u306a\u3057<\/p>\n

                                            *\/<\/p>\n

                                            uint32_t ADC_gain_value = 0; \/\/ \u8aad\u307f\u51fa\u3057\u30c7\u30fc\u30bf<\/p>\n

                                            uint32_t ADC_value = 0; \/\/ \u30c7\u30fc\u30bf\u5024\u3092\u6e2c\u5b9a\u3059\u308b<\/p>\n

                                            float tmpPt100=0\uff1b<\/p>\n

                                            float RTD=0\uff1b<\/p>\n

                                            void SSP1x20_ADC_Measure(void)<\/p>\n

                                            {<\/p>\n

                                             <\/p>\n

                                            printf(\"\uffe4\u591a\u70b9\u5358\u4e00\u96fb\u5727\u6e2c\u5b9a\uffe4\")\uff1b<\/p>\n

                                            Write_REGTab[0] = SSP1x20_MUX_AIN1_AIN0 | SSP1x20_GAIN_1 | SSP1x20_PGA_BYPASS_OFF\uff1b<\/p>\n

                                            Write_REGTab[1] = SSP1x20_DR_20SPS | SSP1x20_MODE_NORMAL | SSP1x20_SC | SSP1x20_TS_OFF | SSP1x20_BCS_OFF\uff1b<\/p>\n

                                            Write_REGTab[2] = SSP1x20_VREF_REF0 | SSP1x20_REJECT_OFF | SSP1x20_PSW_OFF | SSP1x20_IDAC_500uA\uff1b<\/p>\n

                                            Write_REGTab[3] = SSP1x20_IDAC1_AIN2 | SSP1x20_IDAC2_AIN3 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                            \/\/ Write_REGTab[3] = SSP1x20_IDAC1_AIN3 | SSP1x20_IDAC2_AIN2 | SSP1x20_DRDYM_DRDY\uff1b<\/p>\n

                                            SSP1x20_WriteRegister(SSP1x20_REG0, 4, &Write_REGTab[0])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[0]=%x\\rn\", Write_REGTab[0])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[1]=%x\\rn\", Write_REGTab[1])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[2]=%x\\rn\", Write_REGTab[2])\uff1b<\/p>\n

                                            printf(\"Write_REGTab[3]=%x\\rn\", Write_REGTab[3])\uff1b<\/p>\n

                                            \u4e00\u65b9<\/p>\n

                                            {<\/p>\n

                                            SSP1x20_SendCommand(SSP1x20_CMD_START); \u9023\u7d9a\u6e2c\u5b9a\u304c\u6709\u52b9\u306a\u5834\u5408\u3001\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306f 1 \u56de\u306e\u307f\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n

                                            HAL_Delay(100)\uff1b<\/p>\n

                                            spi_adc_cs_low()\uff1b<\/p>\n

                                             <\/p>\n

                                            ADC_gain_value =0\uff1b<\/p>\n

                                            ADC_gain_value = SPI_ADC_ReadByte()\uff1b<\/p>\n

                                            ADC_gain_value = (ADC_gain_value << 8) | SPI_ADC_ReadByte()\uff1b<\/p>\n

                                            ADC_gain_value = (ADC_gain_value << 8) | SPI_ADC_ReadByte()\uff1b<\/p>\n

                                             <\/p>\n

                                            spi_adc_cs_high()\uff1b<\/p>\n

                                             <\/p>\n

                                            #define CALIBRATED_FULL_SCALE 4210300.0f \/\/ \u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u306b\u3088\u308b<\/p>\n

                                             <\/p>\n

                                            RTD = 1650.0f * ((float)ADC_gain_value \/ CALIBRATED_FULL_SCALE)\uff1b<\/p>\n

                                            tmpPt100 = rtd_to_temperature_iec60751(RTD)\uff1b<\/p>\n

                                            __NOP()\uff1b<\/p>\n

                                             <\/p>\n

                                            printf(\"R=%.3f \u03a9, Temp=%.2f \u00b0Crrn\",RTD, tmpPt100 )\uff1b<\/p>\n

                                            }<\/p>\n

                                            }<\/p>\n

                                             <\/p>\n

                                            \u30c6\u30b9\u30c8\u7d50\u679c\u3092\u56f3\u306b\u793a\u3059\uff1a<\/p>\n

                                             <\/p>\n

                                            \u6e29\u6c34\u6e29\u5ea6\u30c6\u30b9\u30c8\uff1a<\/p>\n

                                            \"\" \"\"<\/p>\n

                                            \u6c37\u6c34\u6df7\u5408\u30c6\u30b9\u30c8\uff1a<\/p>\n

                                            \"\" \"\"<\/p>\n

                                            4.\u5916\u90e8\u6e29\u5ea6\u8a66\u9a13\u69cb\u6210\u306e\u8a73\u7d30\uff1a<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                                            \u767b\u9332<\/strong><\/td>\n\u5024\u3092\u8a2d\u5b9a\u3059\u308b\uff08\u3042\u306a\u305f\u306e\u30b3\u30fc\u30c9\uff09<\/strong><\/td>\n\u6a5f\u80fd\u306e\u8aac\u660e<\/strong><\/td>\n\u306a\u305c\u3053\u308c\u3092\u9078\u3093\u3060\u306e\u3067\u3059\u304b\uff1f<\/strong><\/td>\n<\/tr>\n<\/thead>\n
                                            REG0<\/strong>
                                            \n\u30e9\u30a4\u30c8_REGTab[0\uff3d<\/td>\n                                            		SSP1x20_MUX_AIN1_AIN0
                                            \n| SSP1x20_GAIN_1
                                            \n|SSP1x20_PGA_BYPASS_OFF<\/td>\n                                            		\u30c1\u30e3\u30f3\u30cd\u30eb\u9078\u629e\uff0b\u30b2\u30a4\u30f3\u8a2d\u5b9a\u306b\u5165\u308b<\/strong><\/td>\n <\/td>\n<\/tr>\n
                                            SSP1x20_MUX_AIN1_AIN0<\/td>\n\u5dee\u52d5\u5165\u529b\uff1a AIN1\u304c\u6b63\u3067AIN0\u304c\u8ca0<\/strong><\/td>\nPT100\u306f\u4e21\u7aef\u304cAIN0\u3068AIN1\u306b\u63a5\u7d9a\u3055\u308c\u3001\u5dee\u52d5\u96fb\u5727\u6e2c\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u26a0\ufe0f \u6975\u6027\u306b\u6ce8\u610f<\/strong>\u3082\u3057\u8a2d\u5b9a\u304c\u9006\u3067\u3042\u308c\u3070\u3001ADC \u306f\u8ca0\u306e\u5024\uff08\u4f8b\u3048\u3070 0x800000\uff09\u3092\u51fa\u529b\u3057\u3001\u305d\u306e\u7d50\u679c\u6e29\u5ea6\u306f\u8ca0\u306b\u306a\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_GAIN_1<\/td>\n\u30b2\u30a4\u30f3 = 1<\/td>\nPT100\u306f\u96fb\u5727\u306f\u5c0f\u3055\u3044\u304c\uff08\u4f8b\u3048\u3070500\u03bcA\u00d7100\u03a9\uff1d50mV\uff09\u3001\u6bd4\u7387\u6e2c\u5b9a\u3092\u4f7f\u7528\u3059\u308b\uff08\u57fa\u6e96\u96fb\u5727\u3082IDAC\u306e\u3082\u306e\u3067\u3042\u308b\uff09\u3002 \u5897\u5e45\u306a\u3057 <\/strong>\u306f\u98fd\u548c\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u5fc5\u8981\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_PGA_BYPASS_OFF<\/td>\n\u30d0\u30a4\u30d1\u30b9PGA\u306a\u3057<\/strong><\/td>\n\u4fe1\u53f7\u7d4c\u8def\u304c\u6b63\u5e38\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001PGA \u6a5f\u80fd\u3092\u4fdd\u6301\u3059\u308b\uff08\u30b2\u30a4\u30f3=1 \u3067\u3042\u3063\u3066\u3082\uff09\u3002<\/td>\n<\/tr>\n
                                            REG1<\/strong>
                                            \n\u30e9\u30a4\u30c8_REGTab[1\uff3d<\/td>\n                                            		SSP1x20_DR_20SPS
                                            \n| SSP1x20_MODE_NORMAL
                                            \n| SSP1x20_SC
                                            \n| SSP1x20_TS_OFF
                                            \n| SSP1x20_BCS_OFF<\/td>\n                                            		\u30c7\u30fc\u30bf\u30fb\u30ec\u30fc\u30c8\uff0b\u52d5\u4f5c\u30e2\u30fc\u30c9<\/strong><\/td>\n <\/td>\n<\/tr>\n
                                            SSP1x20_DR_20SPS<\/td>\n\u30b5\u30f3\u30d7\u30eb\u30ec\u30fc\u30c8 20\u30b5\u30f3\u30d7\u30eb\u30dd\u30a4\u30f3\u30c8\/\u79d2<\/strong><\/td>\n\u4f4e\u901f\u306f\u7cbe\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u3001\u30ce\u30a4\u30ba\u3092\u6291\u5236\u3057\u3001\u6e29\u5ea6\u6e2c\u5b9a\uff08\u3086\u3063\u304f\u308a\u3068\u3057\u305f\u5909\u5316\uff09\u306b\u9069\u3057\u3066\u3044\u308b\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_MODE_NORMAL<\/td>\n\u901a\u5e38\u306e\u9023\u7d9a\u5909\u63db\u30e2\u30fc\u30c9<\/td>\n\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306e\u305f\u3081\u306e\u9023\u7d9a\u30c7\u30fc\u30bf\u51fa\u529b\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_SC<\/td>\n\u81ea\u5df1\u6821\u6b63\u306e\u5b9f\u884c<\/strong><\/td>\n\u5404\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u5f8c\u306b\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\/\u30b2\u30a4\u30f3\u30a8\u30e9\u30fc\u3092\u6392\u9664\u3057\u3001\u7cbe\u5ea6\u3092\u5411\u4e0a\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_TS_OFF<\/td>\n\u5185\u90e8\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u3092\u30aa\u30d5\u306b\u3059\u308b<\/strong><\/td>\n\u6211\u3005\u306f\u5916\u90e8\u306ePT100\u3092\u6e2c\u5b9a\u3057\u3066\u304a\u308a\u3001\u5185\u90e8\u6e29\u5ea6\u306f\u5fc5\u8981\u306a\u3044\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_BCS_OFF<\/td>\n\u30d0\u30fc\u30f3\u30aa\u30d5\u96fb\u6d41\u6e90\u306e\u7121\u52b9\u5316<\/td>\n\u3044\u3084\u3001\u305d\u3093\u306a\u3053\u3068\u306f\u306a\u3044\u3002<\/td>\n<\/tr>\n
                                            \u30ec\u30b02<\/strong>
                                            \n\u30e9\u30a4\u30c8_REGTab[2\uff3d<\/td>\n                                            		SSP1x20_VREF_REF0
                                            \n| SSP1x20_REJECT_OFF
                                            \n| SSP1x20_PSW_OFF
                                            \nSSP1x20_IDAC_500uA<\/td>\n                                            		\u57fa\u6e96\u96fb\u5727\uff0bIDAC\u8a2d\u5b9a<\/strong><\/td>\n <\/td>\n<\/tr>\n
                                             <\/td>\nSSP1x20_VREF_REF0<\/td>\n\u7528\u9014 \u5916\u90e8\u53c2\u7167 <\/strong>\u96fb\u5727\uff08REF0 = AIN2\/AIN3\u9593\u96fb\u5727\uff09\u3002<\/td>\n\u5b9f\u65bd \u6bd4\u7387\u306b\u57fa\u3065\u304f\u6e2c\u5b9a<\/strong>:ADC \u7d50\u679c = (Vpt100 \/ Vref) \u00d7 224\u3001 IDAC\u96fb\u6d41\u306e\u7d76\u5bfe\u5024\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/strong>\u96fb\u6e90\u5909\u52d5\u306b\u5f37\u3044\u3002<\/td>\n<\/tr>\n
                                             <\/td>\nSSP1x20_REJECT_OFF<\/td>\n50\/60Hz\u30b5\u30d7\u30ec\u30c3\u30b7\u30e7\u30f3\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u306a\u3044<\/td>\n\u74b0\u5883\u5e72\u6e09\u304c\u5c0f\u3055\u3044\u5834\u5408\u306f\u30aa\u30d5\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u96fb\u529b\u5468\u6ce2\u6570\u74b0\u5883\u3067\u3042\u308c\u3070\u3001REJECT_50\u3092\u30aa\u30f3\u306b\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
                                             <\/td>\nSSP1x20_PSW_OFF<\/td>\n\u30bb\u30f3\u30b5\u30fc\u306e\u96fb\u6e90\u30b9\u30a4\u30c3\u30c1\u3092\u5207\u308b<\/td>\nPT100\u306fIDAC\u304b\u3089\u96fb\u6e90\u3092\u4f9b\u7d66\u3055\u308c\u3001\u8ffd\u52a0\u306ePSW\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/td>\n<\/tr>\n
                                             <\/td>\nSSP1x20_IDAC_500uA<\/td>\n\u5b9a\u96fb\u6d41\u6e90\u96fb\u6d41\u306e\u8a2d\u5b9a 500 \u03bcA<\/strong><\/td>\n\u5171\u901a\u306e\u96fb\u6d41\u5024\u3001\u6d88\u8cbb\u96fb\u529b\u3068\u4fe1\u53f7\u632f\u5e45\u306e\u30d0\u30e9\u30f3\u30b9\uff08100\u03a9\u219250mV\uff09\u3002<\/td>\n<\/tr>\n
                                            \u30ec\u30b03<\/strong>
                                            \n\u30e9\u30a4\u30c8_REGTab[3\uff3d<\/td>\n                                            		SSP1x20_IDAC1_AIN2
                                            \n| SSP1x20_IDAC2_AIN3
                                            \n| SSP1x20_DRDYM_DRDY<\/td>\n                                            		IDAC\u51fa\u529b\u7aef\u5b50\uff0bDRDY\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong><\/td>\n <\/td>\n<\/tr>\n
                                            SSP1x20_IDAC1_AIN2<\/td>\nIDAC1\u51fa\u529b\u2192AIN2<\/strong><\/td>\nAIN2\uff5ePT100\uff08\u52b1\u78c1\uff09<\/td>\n<\/tr>\n
                                            SSP1x20_IDAC2_AIN3<\/td>\nIDAC2\u51fa\u529b\u3092AIN3\u3078<\/strong><\/td>\nAIN3\u306fR_ref\u306e\u4e00\u7aef\u3067\u57fa\u6e96\u62b5\u6297\u306b\u63a5\u7d9a\u3055\u308c\u308b\uff08\u30eb\u30fc\u30d7\u3092\u5f62\u6210\u3059\u308b\uff09
                                            \n\u2192\u5b9f\u73fe\u3059\u308b 3\u7dda\u5f0f\u88dc\u511f <\/strong>(\u30ef\u30a4\u30e4\u30fc\u62b5\u6297\u3092\u76f8\u6bba\u3059\u308b\uff09\u3002<\/td>\n<\/tr>\n
                                            SSP1x20_DRDYM_DRDY<\/td>\n\u6709\u52b9\u306b\u3059\u308b DRDY\u30d4\u30f3 <\/strong>(\u30c7\u30fc\u30bf\u30ec\u30c7\u30a3\u4fe1\u53f7\uff09\u3002<\/td>\nMCU\u306fGPIO\u3092\u901a\u3058\u3066DRDY\u306e\u30ed\u30fc\u30fb\u30ec\u30d9\u30eb\u3092\u691c\u51fa\u3057\u3001\u30c7\u30fc\u30bf\u304c\u3044\u3064\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u628a\u63e1\u3057\u3066\u30dd\u30fc\u30ea\u30f3\u30b0\u3092\u56de\u907f\u3059\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                             <\/p>\n

                                            ----------------------------------<\/p>\n

                                            \u30ad\u30fc\u30fb\u30d1\u30fc\u30c4\u30fb\u30b3\u30fc\u30c9\u306e\u8a08\u7b97\u5f0f\uff1a<\/p>\n

                                            RTD = 1650*( (float)ADC_gain_value \/(0x3fffff)); \/\/\u57fa\u6e96\u62b5\u62971650\u30aa\u30fc\u30e0 tmpPt100 = (RTD-100)\/0.385\uff1b<\/p>\n

                                            \u57fa\u6e96\u62b5\u62971650\u30aa\u30fc\u30e0\u3001<\/h2>\n

                                            1\u884c\u76ee\u306e\u30b3\u30fc\u30c9 RTD = 1650 * (ADC \/ 0x3FFFFF)<\/h2>\n

                                            \u5143\u306eADC\u5024\u3092PT100\u306e\u62b5\u6297\u5024\u306b\u5909\u63db\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\uff08\u6bd4\u7387\u6e2c\u5b9a\uff09<\/h2>\n
                                              \n
                                            • VIN = I \u00d7 RPT100\uff08PT100\u3092\u6a2a\u5207\u308b\u96fb\u5727\uff09<\/strong><\/li>\n
                                            • VREF = I \u00d7 RREF\uff08\u57fa\u6e96\u62b5\u6297\u306b\u304b\u304b\u308b\u96fb\u5727\uff09<\/strong><\/li>\n<\/ul>\n

                                              \u4e21\u7aef\u306b\u540c\u3058\u5b9a\u96fb\u6d41\u6e90I adc\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n

                                               <\/p>\n

                                              \u3060\u304b\u3089\u00a0\u00a0\u00a0\u00a0 Vin\/Vref = Rpt100\/Rref<\/strong><\/p>\n

                                              \u00a0<\/strong><\/p>\n

                                              ADC\u306e\u51fa\u529b\u306f\u3001\u3053\u306e\u6bd4\u7387\u3092\u30c7\u30b8\u30bf\u30eb\u5316\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/strong><\/p>\n

                                              ADC_Code = Vin\/Vref x 224<\/sup><\/strong><\/p>\n

                                              \u00a0<\/strong><\/p>\n

                                              \u3060\u304b\u3089\u62bc\u3057\u623b\u3055\u308c\u305f<\/p>\n

                                              Rpt100<\/strong>\u200b<\/strong>= Rref x ADC_Code \/224<\/sup><\/strong><\/p>\n

                                               <\/p>\n

                                              ---------------------------------------<\/p>\n

                                              2\u884c\u76ee\u306e\u30b3\u30fc\u30c9\uff1atmpPt100 = (RTD - 100) \/ 0.385\uff1b<\/h2>\n

                                              \u76f4\u7dda\u8fd1\u4f3c\u5f0f\u3067\u6e29\u5ea6\u3092\u898b\u7a4d\u3082\u308b<\/h2>\n

                                              0\u2103\u306e\u5834\u5408\u3001Rpt100 = 100 \u03a9<\/p>\n

                                              \u6e29\u5ea6\u304c1\u2103\u4e0a\u6607\u3059\u308b\u3054\u3068\u306b\u3001\u62b5\u6297\u5024\u306f\u7d040.385\u03a9\u5897\u52a0\u3059\u308b\u3002<\/p>\n

                                              \u3060\u304b\u3089<\/p>\n

                                               <\/p>\n

                                              T <\/strong>\u2248<\/strong> (R-100)\/0.385<\/strong><\/p>\n

                                              \u00a0<\/strong><\/p>\n

                                              \u00a0<\/strong><\/p>\n

                                              \u2165\u3001\u3088\u304f\u3042\u308b\u554f\u984c\u306e\u30c7\u30d0\u30c3\u30b0\u30ac\u30a4\u30c9<\/h3>\n\n\n\n\n\n\n\n\n
                                              \u30a2\u30ce\u30fc\u30de\u30eb<\/strong><\/td>\n\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/strong><\/td>\n\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u624b\u9806<\/strong><\/td>\n<\/tr>\n<\/thead>\n
                                              ADC\uff08\u751f\uff09\u306e\u5143\u306e\u5024\u306f\u8ca0\u3067\u3042\u308b<\/td>\nAIN0\u306fAIN1\u306e\u9006\u306e\u69cb\u6210\u3067\u3059\u3002<\/td>\n1.\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u8a2d\u5b9a\u3068\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u63a5\u7d9a\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/td>\n<\/tr>\n
                                              r_pt100 > 1400\u03c9<\/td>\n1.IDAC \u96fb\u6d41\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u306a\u3044\u3002<\/td>\n1.REG2 \u306e IDAC \u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\uff08500\u03bcA \u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\uff09\u3002<\/td>\n<\/tr>\n
                                              \u6e29\u5ea6\u5024\u306f - 999\u00b0C<\/td>\nPT100\u306f18\u03a9\u301c330\u03a9\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u308b<\/td>\n1.PT100 \u304c\u65ad\u7dda\u3057\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b\uff08PT100 \u306e\u62b5\u6297\u5024\u3092\u6e2c\u5b9a\u3059\u308b\uff09\uff1b 2. SPI \u901a\u4fe1\u3092\u78ba\u8a8d\u3059\u308b\uff08\u30ec\u30b8\u30b9\u30bf\u69cb\u6210\u5024\u3092\u8aad\u307f\u8fbc\u3080\uff09\u3002<\/td>\n<\/tr>\n
                                              \u6e29\u5ea6\u5909\u52d5 > 0.1\u00b0C<\/td>\n1.\u96fb\u6e90\u306e\u30ea\u30c3\u30d7\u30eb\u304c\u5927\u304d\u3044\u3002<\/td>\n1.SSP1220 \u306e VDD \u30ea\u30c3\u30d7\u30eb\u3092\u6e2c\u5b9a\u3059\u308b(10mV \u4ee5\u4e0b\u5fc5\u8981); 2.\u5e72\u6e09\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u30b7\u30fc\u30eb\u30c9\u7dda\u306e\u30a2\u30fc\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                              \u2166\u3001 SSP1220 \u30b3\u30a2\u30fb\u30ec\u30b8\u30b9\u30bf\u69cb\u6210\u8868<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                                              \u767b\u9332<\/td>\n\u30a2\u30a4\u30c6\u30e0\u306e\u8a2d\u5b9a<\/td>\n\u5024\uff08\u5916\u90e8\u6e29\u5ea6\u6e2c\u5b9a\uff09<\/td>\n\u6a5f\u80fd\u306e\u8aac\u660e<\/td>\n<\/tr>\n<\/thead>\n
                                              REG0<\/td>\n\u5dee\u52d5\u30c1\u30e3\u30f3\u30cd\u30eb<\/td>\nAIN1-AIN0<\/td>\nPT100\u306e\u914d\u7dda\u3092\u5408\u308f\u305b\u3001\u8ca0\u306e\u751f\u3092\u907f\u3051\u308b\u3002<\/td>\n<\/tr>\n
                                              \u30b2\u30a4\u30f3<\/td>\n1\u00d7<\/td>\n\u4fe1\u53f7\u306e\u98fd\u548c\u3092\u907f\u3051\u3001\u6bd4\u7387\u6e2c\u5b9a\u306b\u9069\u5fdc\u3059\u308b<\/td>\n<\/tr>\n
                                              PGA\u30d0\u30a4\u30d1\u30b9<\/td>\n\u7121\u52b9\u306b\u3059\u308b<\/td>\n\u4fe1\u53f7\u7d4c\u8def\u306e\u5b8c\u5168\u6027\u3092\u4fdd\u3064<\/td>\n<\/tr>\n
                                              REG1<\/td>\n\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30fb\u30ec\u30fc\u30c8<\/td>\n20SPS<\/td>\n\u4f4e\u901f\u3067\u7cbe\u5ea6\u304c\u5411\u4e0a\u3057\u3001\u4f4e\u901f\u306e\u6e29\u5ea6\u4fe1\u53f7\u306b\u3082\u5bfe\u5fdc<\/td>\n<\/tr>\n
                                              \u4f5c\u696d\u30e2\u30fc\u30c9<\/td>\n\u30ce\u30fc\u30de\u30eb\u30e2\u30fc\u30c9<\/td>\n\u6e29\u5ea6\u30c7\u30fc\u30bf\u306e\u9023\u7d9a\u5909\u63db\u3068\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u51fa\u529b<\/td>\n<\/tr>\n
                                              \u30bb\u30eb\u30d5\u30fb\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3<\/td>\n\u30a4\u30cd\u30fc\u30d6\u30eb<\/td>\n\u30aa\u30d5\u30bb\u30c3\u30c8\/\u30b2\u30a4\u30f3\u30a8\u30e9\u30fc\u3092\u6392\u9664\u3057\u3001\u7cbe\u5ea6\u3092\u5411\u4e0a<\/td>\n<\/tr>\n
                                              \u5185\u90e8TS<\/td>\n\u7121\u52b9\u306b\u3059\u308b<\/td>\n\u5185\u90e8\u30bb\u30f3\u30b5\u30fc\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u5916\u90e8\u6e29\u5ea6\u6e2c\u5b9a<\/td>\n<\/tr>\n
                                              \u00a0\u30ec\u30b02<\/td>\n\u57fa\u6e96\u96fb\u5727<\/td>\n\u5916\u90e8 REF0<\/td>\nIDAC\u96fb\u6d41\u5909\u52d5\u306b\u5bfe\u6297\u3059\u308b\u6bd4\u7387\u30d9\u30fc\u30b9\u306e\u6e2c\u5b9a<\/td>\n<\/tr>\n
                                              IDAC\u96fb\u6d41<\/td>\n500\u03bcA<\/td>\n\u5e73\u8861\u6d88\u8cbb\u96fb\u529b\u3068\u4fe1\u53f7\u632f\u5e45\uff0850mV 100\u03a9\uff09<\/td>\n<\/tr>\n
                                              \u30ec\u30b03<\/td>\nIDAC1\u30eb\u30fc\u30c8<\/td>\nAIN2<\/td>\n\u52b1\u78c1\u96fb\u6d41\u5165\u529b PT100<\/td>\n<\/tr>\n
                                              IDAC2\u30eb\u30fc\u30c8<\/td>\nAIN3<\/td>\n\u30ea\u30fc\u30c9\u62b5\u6297R7\u306b\u5bfe\u6297\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                              \u2167\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u30fb\u30f4\u30a1\u30f3\u30fb\u30c7\u30e5\u30fc\u30bb\u30f3\u65b9\u7a0b\u5f0f\u4fc2\u6570\u8868<\/h3>\n\n\n\n\n\n\n\n
                                              \u4fc2\u6570<\/td>\n\u6570\u5024<\/td>\n\u5358\u4f4d<\/td>\n\u9069\u7528\u7bc4\u56f2<\/td>\n<\/tr>\n
                                              R0<\/td>\n100.0<\/td>\n\u03a9<\/td>\n0\u2103\u57fa\u6e96\u62b5\u6297<\/td>\n<\/tr>\n
                                              A<\/td>\n3.9083\u00d710-3<\/sup><\/td>\n\u2103-1<\/sup><\/td>\n-200\u2103~600\u2103<\/td>\n<\/tr>\n
                                              B<\/td>\n-5.775\u00d710-7<\/sup><\/td>\n\u2103-2<\/sup><\/td>\n-200\u2103~600\u2103<\/td>\n<\/tr>\n
                                              C<\/td>\n-4.183\u00d710-12<\/sup><\/td>\n\u2103-4<\/sup><\/td>\n-200\u2103~0\u2103<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                              \u5b8c\u5168\u306a\u30b3\u30fc\u30c9\u306f\u3001\u5f53\u793e\u306e\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002\u9023\u7d61\u514818014203727<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

                                              SSP1220 3\u7dda\u5f0fRTD\u6e2c\u5b9a<\/p>","protected":false},"author":9,"featured_media":3001,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[62],"tags":[331,330],"acf":[],"_links":{"self":[{"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/posts\/2991"}],"collection":[{"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/comments?post=2991"}],"version-history":[{"count":0,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/posts\/2991\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/media\/3001"}],"wp:attachment":[{"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/media?parent=2991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/categories?post=2991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siproin-ic.com\/ja\/wp-json\/wp\/v2\/tags?post=2991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}