This document describes the features and characteristics of the ADE7769 energy metering IC, including integrated oscillator and no-load indication.
The ADE7769 is a high‑accuracy energy‑metering IC with an integrated oscillator that eliminates the need for an external crystal. It provides average real‑power outputs (F1, F2) for driving electromechanical counters or stepper motors and a high‑frequency CF output for instantaneous power calibration. The device includes on‑chip reference, power‑supply monitoring, no‑load threshold detection, and a REVP output that flags negative power conditions.
The document contains full specifications, absolute maximum ratings, pin descriptions, timing diagrams, and typical performance curves. It also outlines recommended application circuits, oscillator configuration, and evaluation board information for designers implementing the ADE7769 in watt‑hour meters.
| Supply Voltage (Vop) | 5 V ±5% |
|---|---|
| Operating Temperature Range | ‑40 °C to +85 °C |
| On‑chip Reference Voltage | 2.45 V nominal |
| Channel V1 Maximum Signal | +30 mV max |
| Channel V2 Maximum Signal | +165 mV max |
| Low‑Frequency Output High Voltage (F1/F2) | 45 V |
The CF logic output stays high when the ADE7769 is under the no‑load threshold, providing a no‑load indication.
The REVP output goes high when negative power is detected, i.e., when the phase angle between voltage and current exceeds 90°.
The device requires a supply voltage (Vop) of 5 V ±5% for specified operation.