This document introduces the ADE7760 energy metering IC with on-chip fault detection. It supports IEC 687/61036 standards and features high accuracy active energy measurement with less than 0.1% error over a dynamic range of 500 to 1. The IC provides active power on the frequency outputs F1 and F2, and the high frequency output CF is used for calibration and supplies instantaneous active power. It continuously monitors the phase and neutral current for fault detection in 2-wire distribution systems. The current channels are designed for current transformer sensors, and the larger of the two currents (phase or neutral) is used for billing, even during a fault condition. It also has two logic outputs (FAULT and REVP) that can indicate potential miswiring or fault conditions. The IC supports direct drive for electromechanical counters and 2-phase stepper motors.
The ADE7760 is a high‑accuracy, fault‑tolerant energy‑metering integrated circuit designed for 2‑wire distribution systems. It measures active energy with less than 0.1 % error over a wide dynamic range and includes on‑chip fault detection that monitors phase and neutral currents.
The handbook contains full specifications, absolute maximum ratings, pin‑out diagrams, timing characteristics, fault‑detection details, typical performance curves, and application notes for interfacing the device to microcontrollers and selecting output frequencies.
| Measurement Error | 0.1 % of reading (typ) |
|---|---|
| Output Frequency Variation | 0.01 % (typ) |
| Maximum Differential Input Signal | +660 mV peak |
| Oscillator Frequency | 450 kHz |
| Supply Voltage (Vop) | 5 V ±5 % |
| Temperature Coefficient (Reference) | 30 ppm/°C (typ) |
The ADE7760 has a measurement error of 0.1 % of reading, typical, over a dynamic range of 500 to 1.
It continuously monitors phase and neutral currents and signals a fault when the currents differ by more than 6.25 %.
The device operates from a single 5 V supply with a tolerance of ±5 %.