AD71056ARZ

Overview

The AD71056ARZ is a high-accuracy, single-phase electrical energy metering integrated circuit manufactured by Analog Devices. It features an integrated precise oscillator circuit that serves as the internal clock source, eliminating the need for external crystals or resonators. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40°C to +85°C. Designed for surface mount installation in a 16-pin SOIC package, it provides pin reduction compared to predecessor models like the ADE7755 while maintaining accurate energy measurement capabilities.

Feature Summary

• Integrates a precise oscillator circuit to function as the internal clock source
• Eliminates the requirement for external crystal or resonator components
• Provides pin reduction relative to previous generation metering ICs

Applications

• Single-phase electrical energy metering systems
• Utility metering infrastructure
• Energy monitoring devices requiring integrated timing sources

Procurement Notes

Verify the specific revision status (e.g., Revision A) against the latest official Analog Devices datasheet before integration. Confirm that the 16-SOIC package dimensions and thermal characteristics align with the target PCB layout. Ensure the design accommodates the specified 4.75 V to 5.25 V supply voltage range and the -40°C to +85°C operating temperature limits for the intended application environment.

Selection Notes

Select this component when designing single-phase metering applications that benefit from reduced bill-of-materials count by removing external oscillators. It is suitable for designs prioritizing pin compatibility with older ADE7755-based architectures while requiring modern integration. Verify that the fixed output characteristics and single-phase measurement requirements match the system specifications.

Part Context

The AD71056 series belongs to Analog Devices' family of specialized energy metering ICs. It serves as an enhanced, pin-reduced version of the ADE7755, designed to simplify circuit board layout and reduce assembly costs. The integration of the oscillator circuit distinguishes it from earlier models that required discrete timing components, streamlining the design process for utility-grade metering equipment.

Replacement Considerations

The AD71056 is documented as a pin-reduction enhancement of the ADE7755. Designers migrating from ADE7755 should verify schematic compatibility and ensure that the removal of external oscillator connections does not disrupt existing timing dependencies in legacy designs.