MAX71020AEUI+

Overview

The MAX71020AEUI+ is a single-phase energy metering integrated circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It is housed in a 28-TSSOP surface-mount package with dimensions of 0.173 inches (4.40mm) width. The device operates within a supply voltage range of 2.8 V to 3.6 V and consumes a supply current of 3 mA. It supports an input impedance between 50 kΩ and 100 kΩ, with I/O high voltages of -1.1 V and 2 V, and I/O low voltages of 0.8 V and 0.96 V. The unit maintains a measurement error of 0.5% and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Provides precise single-phase energy metering capabilities for utility applications.
• Integrates high-impedance analog front-end interfaces for direct sensor connection.
• Delivers calibrated measurement accuracy with minimal external component requirements.

Applications

• Single-phase residential electricity meters
• Commercial sub-metering systems
• Smart grid monitoring nodes

Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability status. Confirm package integrity and pin alignment against the 28-TSSOP specification sheet prior to integration. Ensure storage conditions maintain moisture sensitivity levels as defined in the datasheet to prevent soldering defects during assembly processes.

Selection Notes

Select this component for designs requiring certified single-phase energy measurement with fixed supply voltage constraints. Evaluate thermal performance within the specified -40°C to +85°C operational range. Consider the 28-TSSOP footprint compatibility with existing PCB layouts. Assess system power budget against the 3 mA supply current requirement for battery or low-power operation scenarios.

Part Context

This part belongs to the Maxim Integrated energy metering portfolio, now part of Analog Devices Inc. It serves as a specialized solution for utility billing infrastructure. The device replaces discrete metering architectures by integrating analog signal processing and digital calibration into a compact semiconductor package designed for mass production in smart metering networks.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify end-of-life status with the manufacturer for alternative sourcing strategies.