GENERAL DESCRIPTION
The ADE7761 is a high accuracy, fault tolerant, electrical energy measurement IC intended for use with 2-wire distribution systems. The part specifications surpass the accuracy requirements as quoted in the IEC61036 standard.

FEATURES
   High accuracy active energy measurement IC, supports
      IEC 687/61036
   Less than 0.1% error over a dynamic range of 500 to 1
   Supplies active power on the frequency outputs F1 and F2
   High frequency output CF is intended for calibration and
      supplies instantaneous active power
   Continuous monitoring of the phase and neutral current
      allows fault detection in 2-wire distribution systems
   Current channels input level best suited for current
      transformer sensors
   Uses the larger of the two currents (phase or neutral) to
      bill—even during a fault condition
   Continuous monitoring of the voltage and current inputs
      allows missing neutral detection
   Uses one current input (phase or neutral) to bill when
      missing neutral is detected
   Two logic outputs (FAULT and REVP) can be used to indicate
      a potential miswiring, fault, or missing neutral condition
   Direct drive for electromechanical counters and 2-phase
      stepper motors (F1 and F2)
   Proprietary ADCs and DSP provide high accuracy over large
      variations in environmental conditions and time
   Reference 2.5 V ± 8% (drift 30 ppm/°C typical) with external
      overdrive capability
   Single 5 V supply, low power