ADE7751ARSZRL

The ADE7751ARSZRL from Analog Devices is a high-accuracy, single-phase energy metering integrated circuit featuring on-chip fault detection. It surpasses IEC 687/1036 standards, providing less than 0.1% error over a dynamic range of 500 to 1. This IC supplies average real power information and includes continuous monitoring of phase and neutral currents for fault detection in 2-wire distribution systems.

Designed for direct drive of electromechanical counters and 2-phase stepper motors, the ADE7751ARSZRL utilizes a PGA in the current channel for efficient use of small shunt and burden resistances. Its proprietary ADCs and DSP ensure high accuracy across environmental variations. The device operates on a single 5V supply with low power consumption and is housed in a 24-lead SSOP package suitable for surface mounting.

Key features include on-chip power supply monitoring, creep protection, and a 2.5V reference. The fault detection scheme allows the device to continue accurate billing even during a fault condition by using the larger of the phase or neutral currents. Logic outputs (FAULT and REVP) can indicate potential miswiring or fault conditions.