AD71128ARSZ-RL

Overview

The AD71128ARSZ-RL is an energy measurement integrated circuit manufactured by Analog Devices Inc. It is designed for single-phase and split-phase utility metering applications, providing high-precision measurements of voltage, current, and power. The device integrates a high-resolution analog-to-digital converter and digital signal processing capabilities to calculate active, reactive, and apparent energy. It features a serial peripheral interface for communication with a host microcontroller. The component is housed in a small footprint package suitable for compact meter designs.

Feature Summary

• Integrated high-resolution analog-to-digital conversion for precise signal sampling
• Digital signal processing for calculating active, reactive, and apparent energy
• Serial peripheral interface for configuration and data retrieval

Applications

• Single-phase utility electricity meters
• Split-phase residential energy monitoring systems
• Smart grid endpoint devices

Procurement Notes

This component is officially designated as obsolete by the manufacturer. Production has ceased, and it is no longer available through standard distribution channels. Buyers should verify the authenticity of any remaining stock from third-party sources, as availability is limited and supply chain risks are elevated. Replacement planning is strongly recommended due to the discontinued status.

Selection Notes

Engineers requiring this specific functionality must evaluate alternative components from the same manufacturer's portfolio that offer similar energy metering capabilities. Selection should focus on pin compatibility, register map similarity, and updated feature sets to ensure a smooth transition. Verify that any substitute part meets the original design's accuracy and interface requirements without necessitating significant hardware redesign.

Part Context

The AD71128 is part of Analog Devices' dedicated energy metering product line, which includes various models for different phase configurations and integration levels. This specific variant targets cost-sensitive, high-volume metering applications where space constraints and measurement accuracy are critical. It represents a specialized solution within the broader category of mixed-signal measurement ICs.

Replacement Considerations

Official substitutes include other parts from the AD711xx series or newer generations such as the ADE7953 or ADE7880 families, depending on specific phase and channel requirements. Cross-referencing datasheets for electrical characteristics and pinout compatibility is essential before substitution.