71M6543G-IGTR/F

Overview

The 71M6543G-IGTR/F is a fourth-generation polyphase metering system-on-chip (SoC) manufactured by Analog Devices Inc. under the Maxim Integrated brand. It integrates a 5MHz 8051-compatible MPU core, low-power real-time clock with digital temperature compensation, flash memory, and an LCD driver. The device utilizes Single Converter Technology® featuring a 22-bit delta-sigma ADC, three or four analog inputs, a precision voltage reference, and a 32-bit computation engine. Designed for 3-phase energy metering applications, it operates within a supply voltage range of 3V to 3.6V and supports surface mount installation in a 100-LQFP package.

Feature Summary

• Integrates a 5MHz 8051-compatible microprocessor unit core with low-power real-time clock and digital temperature compensation
• Employs Single Converter Technology® with a 22-bit delta-sigma ADC and 32-bit computation engine for high-precision measurement
• Includes on-chip flash memory and LCD driver capabilities to reduce external component count
• Supports polyphase metering architectures with multiple analog inputs and precision voltage references

Applications

• Three-phase energy metering systems
• Polyphase utility metering infrastructure
• Smart grid monitoring devices
• Industrial power quality analyzers

Procurement Notes

Verify the specific suffix 'G' against the official datasheet to confirm pinout and feature set compatibility. Confirm that the 'IGTR' designation matches the required tape and reel packaging format for automated assembly. Check current product status as legacy components may have limited availability or require alternative sourcing strategies from authorized distributors.

Selection Notes

Select this component for designs requiring integrated polyphase metering with minimal external circuitry. Ensure the application benefits from the 22-bit ADC resolution and 32-bit computation engine for accuracy. Verify that the 5MHz processor speed meets the computational requirements for the specific metering algorithm. Confirm that the 100-LQFP package fits the PCB layout constraints and thermal management requirements.

Part Context

This part belongs to the 71M654x series of fourth-generation metering SoCs from Maxim Integrated. It shares architectural similarities with single-phase variants like the 71M6541/2 but is optimized for polyphase applications. The series emphasizes BOM cost reduction through high integration while maintaining performance standards required for utility-grade metering.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other members of the 71M654x family or newer generation metering ICs from Analog Devices if this component is discontinued or unavailable.