Analog Devices ADE7756 Manuals

This document describes the features and characteristics of ADE7756 single-phase energy metering IC, including programmable solution, analog front end, current sensor connection, digital calibration, energy measurement, zero crossing, SAG detection, calibration mode, waveform sampling, and temperature sensor.

This application note describes a high-accuracy, low-cost power meter based on the ADE7756. The design is for use in the North American 3-wire/single-phase application. This meter may also be used in a single-phase, 2-wire distribution system with a minimal amount of changes. The reference design is comprised of the ADE7756, a microcontroller, LCD display, serial interface, and power supply. The ADE7756 is designed to interface to a microcontroller through a serial interface (SPI). The SPI port allows the user to calibrate various components of the meter, including gain, offset, and phase errors. The purpose of the microcontroller is to send display data to the LCD and control the various functions of the meter. An EEPROM is used to store various calibration parameters of the meter and store the meter’s data during a power-down. The entire meter is calibrated through an external calibration routine by a PC through an external SPI interface. The ADE7756 is comprised of two ADCs, a reference circuit, and all the signal processing necessary for the calculation of real (active) power. Circuitry is provided to null out various system errors including gain, phase, and offset errors.

The ADE7756 is a high accuracy, low power energy metering IC that supports IEC 687/1036 standards. It supports sampled waveform data and active energy, and has digital power, phase, and input offset calibration functions. It also has an on-chip temperature sensor and supports SPI-compatible serial interface.

This document introduces the ADE7756 model of active energy metering IC from Analog Devices, which features high accuracy, support for IEC 687/1036 standards, user-programmable voltage sag detection, and PSU supervisory functions.

The ADE7756 is a high-precision active energy metering IC produced by Analog Devices, supporting IEC687/1036 standard, with a dynamic range of 1000:1 and an error of less than 0.1%. It has the function of line voltage SAG detection and PSU supervision, and an on-chip temperature sensor. It can communicate data via SPI-compatible serial interface