This document describes the features and characteristics of Analog Devices' ADE7759 active energy metering IC. The chip features high accuracy, supports IEC 687/1036 standard, on-chip digital integrator, direct interface with current sensors with di/dt output, user-programmable voltage SAG detection, and power supply monitoring, etc.
The ADE7759 is an active power and energy measurement IC that integrates high‑accuracy ADCs, a digital integrator, on‑chip reference, temperature sensor, and a SPI‑compatible serial interface. It can directly interface to di/dt current sensors such as Rogowski coils, eliminating the need for external analog integrators.
The device offers a pulse output proportional to active power, zero‑crossing detection, sag detection, and extensive calibration registers. Detailed specifications cover input ranges, supply requirements, timing characteristics, and absolute maximum ratings for reliable integration into energy‑metering applications.
| Energy measurement accuracy | 0.1 % typ over dynamic range 1000:1 |
|---|---|
| Supply voltage | 5 V ±5 % (4.75 V to 5.25 V) |
| Typical power consumption | 25 mW |
| Input voltage range (analog inputs) | ±0.5 V max differential |
| Temperature coefficient of reference | 20 ppm/°C typ |
The ADE7759 can directly interface to di/dt current sensors such as a Rogowski coil.
The zero‑crossing output toggles at the line voltage zero crossing and can be used for timing or synchronization.
Typical power consumption is 25 mW.
The device requires a 5 V supply with a tolerance of ±5 % (4.75 V to 5.25 V).