Features

Measurement mode 1：

  • 2 channels with typ. 75 ps resolution
  • channel double resolution with typ. 37 ps
  • Range 3.5 ns (0ns) to 2.5 µs
  • 20 ns pulse-pair resolution, 4-fold multihit

Measurement mode 2：

  • 1 channel with typ. 75 ps resolution
  • Double resolution mode with 37 ps, Quad resolution mode with 19 ps resolution
  • Measurement range 500ns to 4 ms (4M High speed clock)
  • 3-fold multihit capability with automatic processing of all 3 data

Analog Input Circuit：

  • Chopper-stabilized low-offset comparator, programmable, ±35mV
  • First-wave detection
  • First-wave pulse-width measurement
  • Integrated analog switches for input selection
  • External circuit is reduced to 2 resistors and 2 capacitors

Temperature Measurement Unit：

  • 2 or 4 sensors, PT500/PT1000 or higher
  • Schmitt trigger integrated
  • 16-Bit eff. with external Schmitt trigger, 17.5-Bit eff. with integrated low noise Schmitt trigger
  • Ultra low current (0.08 µA when measuring every 30 seconds)

Special Functions：

  • Fire pulse generator, up to 127 pulses
  • Trigger to rising and/or falling edge
  • Precise stop enable by windowing
  • Low-power 32 kHz oscillator (500nA)
  • 7×32 Bit EEPROM

General：

  • 4-wire SPI interface
  • Operation voltage: 2.5V ~ 3.6V
  • Operation temperature: -40℃~+125℃
  • QFN32/LQFP32 Package
  Application：

  • Ultrasonic Heat meter，water meter
  • Laser range finder
  • velometer