SSP1842
SSP1842 is a built-in clock calibration-free energy metering IC, which is suitable for single-phase multi-function electricity meters, smart sockets, smart home appliances and other applications, with more cost-efficient solution.
SSP1842 integrates 2 high-precision Sigma-Delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit.
SSP1842 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for over-current protection), and waveform output and so on. SSP1842 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter and information requirement of data acquisition in electricity applications.
SSP1842 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load.
SSP1840
SSP1840 is a built-in clock and calibration-free energy metering IC, suitable for single-phase multifunctional electricity meter, smart socket, smart home appliances, electric bicycle charging pile and other applications with better cost performance.
SSP1840 integrates 2 high-precision sigma-delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit.
SSP1840 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for leakage detection/over-current protection), and temperature detection, waveform output and so on. SSP1840 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter, electric bicycle charging pile and information requirement of data acquisition in electricity applications.
SSP1840 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load.
SSP1851
The SSP1851 is a high-accuracy, fault-tolerant electrical energy measurement IC that is intended for use with 2-wire distribution systems. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard.
The only analog circuitry used in the SSP1851 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.
The SSP1851 incorporates a novel fault detection scheme that warns of fault conditions and allows the SSP1851 to continue accurate billing during a fault event. The SSP1851 does this by continuously monitoring both the phase and neutral (return) currents. A fault is indicated when these currents differ by more than 12.5%. Billing is continued using the larger of the two currents.
The SSP1851 supplies average real power information on the low-frequency outputs F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or interface to
an MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes.
The SSP1851 includes a power supply monitoring circuit on the AVDD supply pin. The SSP1851 will remain in a reset condition until the supply voltage on AVDD reaches 4 V. If the supply falls below 4 V, the SSP1851 will also be reset and no pulses will be issued on F1, F2, and CF. Internal phase matching circuitry ensures that the voltage and current channels are matched whether the HPF in Channel 1 is on or off. The SSP1851 also has anticreep protection.
The SSP1851 is available in 24-lead SSOP packages.
SSP1855
The SSP1855 is a high accuracy electrical energy measurement integrated circuit with technical specifications that meet the accuracy requirements specified in IEC1036. The SSP1855 uses analogue circuitry only for the ADC and reference source, and digital circuitry for all other signal processing (such as multiplication and filtering), which allows the SSP1855 to maintain extremely high accuracy and long-term stability in harsh environmental conditions.The SSP1855 pins F1 and F2 output the average value of active power at a lower frequency and can be used to directly drive electromechanical meters or to interface with microcontrollers (MCUs). Pin CF outputs an instantaneous value of active power at a higher frequency for calibration or interfacing with an MCU.The SSP1855 contains an internal monitoring circuit for the VDD power supply pin. The SSP1855 remains in reset until VDD rises to 4V. When VDD falls below 4V, the SSP1855 is also reset, at which point there are no outputs from F1, F2, or CF.Internal phase matching circuitry allows the voltage and current channels to always be phase matched, regardless of whether the high pass filter (HPF) within channel 1 is on or off. An internal no-load threshold feature ensures that the SSP1855 has no latency at no load.The SSP1855 is available in a 24-pin SSOP package.
SSP1837
SSP1837 is a wide range of single-phase multi-function energy meter IC for single-phase socket, single-phase strip, Smart Appliance, with a low cost and high accuracy.
SSP1837 integrates two high-accuracy Sigma-Delta ADC, voltage reference, power management and other analog circuit modules, and digital signal processing circuit to calculate active power, IRMS, VRMS etc. High frequency CF1 is provided for indicating IRMS/VRMS and high frequency CF for energy metering.
SSP1837 can measure the single-phase active energy, active power, current and voltage RMS and other parameters to fully meet the needs of the socket, power strip, smart appliances and others.
