ADE7751 is an energy metering IC with on-chip fault detection from Analog Devices. This chip features high accuracy, low power consumption and low cost.
The ADE7751 is a high‑accuracy, fault‑tolerant electrical energy measurement IC intended for 2‑wire distribution systems. It provides average real‑power outputs (F1, F2) and a high‑frequency calibration output (CF), and includes on‑chip fault detection that continues billing during fault conditions.
The device operates from a single 5 V supply, offers selectable gains (1, 2, 8, 16), and is available in 24‑lead DIP and SSOP packages. Detailed specifications cover accuracy, phase error, power‑supply rejection, logic‑output levels, and absolute‑maximum ratings.
| Measurement Accuracy | 0.1 % reading typical over a dynamic range of 500 : 1 |
|---|---|
| Supply Voltage (AVpp/DVpp) | 5 V ±5 % |
| Logic Output High Voltage (F1/F2) | ≥4.5 V at 10 mA |
A fault is indicated when the phase and neutral currents differ by more than 12.5 % of the larger current.
The device requires a 5 V supply with a tolerance of ±5 % on both AVpp and DVpp pins.
Four gain settings are available: 1, 2, 8, and 16.
It is available in 24‑lead plastic DIP and 24‑lead SSOP (shrink small outline) packages.