This document introduces the ADE7755 energy metering IC from Analog Devices, which features high accuracy, wide dynamic range, and frequency outputs.
The ADE7755 is a high‑accuracy energy‑metering IC with pulse outputs for average and instantaneous real‑power measurement. It offers a single 5 V supply, low power consumption, on‑chip reference, and built‑in power‑supply monitoring. The device is pin‑compatible with the AD7755 but adds synchronous CF and F1/F2 outputs for all load conditions.
The datasheet provides complete electrical specifications, pin descriptions, timing diagrams, absolute‑maximum ratings, and ordering information for the 24‑lead SSOP package. It also includes typical performance curves, calibration frequency selection, and example calculations for both DC and AC inputs.
| Package | 24‑lead SSOP |
|---|---|
| Supply Voltage (AVpp) | 4.75 V min – 5.25 V max (5 V ± 5 %) |
| On‑chip Reference Voltage | Nominal 2.5 V ± 8 % |
| Gain Error (typical) | +7 % (ideal) |
| Phase Error Between Channels | ±0.1° over 45 Hz–65 Hz |
| Logic Output High Voltage (F1/F2) | ≥4.5 V (5 V ± 5 % supply) |
AVpp must be between 4.75 V minimum and 5.25 V maximum, which corresponds to 5 V ± 5 %.
The on‑chip reference is nominally 2.5 V with a tolerance of ±8 %.