This document describes the features and characteristics of the ADE7757 energy metering IC, including integrated oscillator as clock source, high accuracy supporting 50 Hz/60 Hz IEC 521/1036, less than 0.1% error over a dynamic range of 500 to 1, etc.
The ADE7757 is a pin‑reduced, high‑accuracy energy‑metering IC that integrates a crystal‑free oscillator as its clock source. It directly drives electromechanical counters or stepper motors via low‑frequency outputs (F1, F2) and provides a high‑frequency CF output for instantaneous real‑power calibration.
The device operates from a single 5 V supply, includes on‑chip reference (2.5 V ±8%) and power‑supply monitoring, and features a no‑load threshold to prevent creep. It is supplied in a 16‑lead SOIC narrow‑body package and is rated for industrial temperature ranges.
| On‑Chip Reference Voltage | 2.5 V ±8% |
|---|---|
| Channel V1 Maximum Signal Level | +30 mV |
| Channel V2 Maximum Signal Level | +165 mV |
The high‑frequency CF output provides instantaneous real‑power information and is intended for calibration purposes.