The MCP39F521 is a highly integrated, single-phase power-monitoring IC designed for real-time measurement of input power for AC/DC power supplies, providing power and energy values. It includes dual-channel delta sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible 2-wire interface. An integrated low-drift voltage reference in addition to the 94.5 dB of SINAD performance on each measurement channel allows for better than 0.1% accurate designs across a 4000:1 dynamic range.

   Power Monitoring Accuracy capable of 0.1% error across 4000:1 dynamic range

  Built-In Calculations on Fast 16-Bit Processing Core

  Active, Reactive, Apparent Power

  Active and Reactive Energy Accumulation

  True RMS Current, RMS Voltage

  Line Frequency, Power Factor

  Dedicated Zero Crossing Detection (ZCD) Pin 

  Dedicated PWM Output Pin

  Automatic Event Pin Control through Fast Voltage Surge Detection

  Fast Calibration Routines

  I2C Interface

   512 bytes User-accessible EEPROM through page read/write commands

   Non-volatile On-chip Memory, no external memory required

   Low-Drift Internal Voltage Reference: 10 ppm/°C typical

   28-lead 5x5 QFN package

   Extended Temperature Range -40°C to +125°C

  AEC-Q100Grade 1