ADE7761AARSZ

Energy Metering Overview

The ADE7761AARSZ is a single-phase energy metering integrated circuit designed for 2-wire distribution systems. It features on-chip fault detection and missing neutral detection capabilities, supporting IEC 62053-21 accuracy standards with less than 0.1% error over a dynamic range of 500 to 1. The device operates on a single 5 V supply with low power consumption of 25 mW. It includes two analog-to-digital converters (ADCs) and utilizes an SPI interface for communication. The component is housed in an SSOP-20 package and functions within a temperature range of -40°C to +85°C.

Energy Metering Feature Summary

• Provides high-accuracy active energy measurement compliant with IEC 62053-21 standards
• Enables continuous monitoring of phase and neutral currents for fault detection in 2-wire systems
• Detects missing neutral conditions and adjusts billing logic accordingly
• Supports direct drive for electromechanical counters and stepper motors via frequency outputs

Energy Metering Applications

• Single-phase electricity meters for residential or commercial use
• Smart metering systems requiring fault tolerance
• Energy monitoring devices in 2-wire distribution networks

Energy Metering Procurement Notes

Verify the specific suffix 'ARSZ' against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with system voltage requirements of 4.75 V to 5.25 V. Confirm that the SSOP-20 footprint matches the PCB design. Check for any recent lifecycle status changes or obsolescence notices from Analog Devices before finalizing procurement plans.

Energy Metering Selection Notes

Select this component when designing single-phase energy meters that require built-in fault detection for phase and neutral lines. It is suitable for applications needing compliance with IEC 62053-21 accuracy classes without external complex signal processing. Consider the low power consumption and single-supply operation for battery-backed or energy-efficient designs. Ensure the system can accommodate the SPI interface for configuration and data readout.

Energy Metering Part Context

The ADE7761A belongs to the ADE776x series of energy metering ICs from Analog Devices. This series focuses on providing accurate energy measurement with integrated digital signal processing. The ADE7761A specifically targets 2-wire systems, distinguishing itself by its ability to handle faults and missing neutrals, which are common issues in older or poorly maintained electrical infrastructure.

Energy Metering Replacement Considerations

Publicly confirmed substitute part numbers for ADE7761AARSZ were not found in the provided source material.