This is a high-precision, active energy measurement IC that supports IEC 62053-21 standard, with a dynamic range of 1000:1. This product has high precision, low power consumption, and no external power supply.
The ADE7761B is a fault‑tolerant energy measurement IC designed for 2‑wire distribution systems. It provides active‑power pulse outputs (F1, F2, CF) and logic signals (FAULT, REVP) for billing and fault indication, and supports both shunt and current‑transformer sensors.
The device operates from a single 5 V supply (±5 %), includes an on‑chip reference and oscillator (450 kHz), and offers high accuracy (0.1 % of reading) over a wide dynamic range. Detailed specifications cover input ranges, timing characteristics, absolute maximum ratings, and typical performance curves.
| Supply Voltage | 5 V ±5 % |
|---|---|
| Measurement Error | 0.1 % of reading (typ) over a dynamic range of 1000:1 |
| Phase Error Between Channels | max Phase lead 37°, max Phase lag 60° |
| Bandwidth (‑3 dB) | 7 kHz (typ) |
| ADC Offset Error | 15 mV (typ) |
| Gain Error | +4 % (typ) |
| Reference Temperature Coefficient | 30 ppm/°C (typ) |
| Oscillator Frequency | 450 kHz |
| Missing Neutral Detection Threshold | Vop – Von 59.4 mV peak (min) |
When no input voltage is present, the FAULT pin goes high to signal a missing neutral condition, and the device continues billing based on the active current signal.
The device operates from a single 5 V supply with a tolerance of ±5 %.
The ADE7761B provides a measurement error of 0.1 % of reading (typical) over a dynamic range of 1000:1.