ADE7763ARS

单相有功功率和视在电能计量IC Single-Phase Active and Apparent Energy Metering IC

GENERAL DESCRIPTION

The ADE77631 features proprietary ADCs and fixed function DSP for high accuracy over large variations in environmental conditions and time. The ADE7763 incorporates two second order, 16-bit Σ-∆ ADCs, a digital integrator on Ch1, reference circuitry, a temperature sensor, and all the signal processing  required to perform active and apparent energy measurements, line-voltage period measurements, and rms calculation on the voltage and current channels. The selectable on-chip digital integrator provides direct interface to di/dt current sensors such as Rogowski coils, eliminating the need for an external analog integrator and resulting in excellent long-term stability and precise phase matching between the current and the voltage channels.

FEATURES

  High accuracy; supports IEC 61036/60687, IEC62053-21, and IEC62053-22

  On-chip digital integrator enables direct interface-to-current sensors with di/dt output

  A PGA in the current channel allows direct interface to shunts and current transformers

  Active and apparent energy, sampled waveform, and current and voltage rms

  Less than 0.1% error in active energy measurement over a dynamic range of 1000 to 1 at 25°C

  Positive-only energy accumulation mode available

  On-chip user programmable threshold for line voltage surge and SAG and PSU supervisory

  Digital calibration for power, phase, and input offset

  On-chip temperature sensor ±3°C typical

  SPI®-compatible serial interface

  Pulse output with programmable frequency

  Interrupt request pin IRQ and status register

  Reference 2.4 V with external overdrive capability

  Single 5 V supply, low power 25 mW typical