71M6541G-IGT/F

Overview

The 71M6541G-IGT/F is a fourth-generation single-phase metering System-on-Chip (SoC) from Maxim Integrated. It integrates a 5MHz 8051-compatible MPU core, low-power RTC with digital temperature compensation, flash memory, and an LCD driver. The device utilizes Single Converter Technology featuring a 22-bit delta-sigma ADC, three analog inputs, precision voltage reference, and a 32-bit computation engine. It supports optional interfaces to isolated sensors for BOM cost reduction and magnetic tamper immunity. Key specifications include 0.1% accuracy over a 2000:1 current range, exceeding IEC 62053/ANSI C12.20 standards. Memory configurations vary by variant, with the G-series typically offering 64KB Flash and 1KB RAM. It operates on a 3.3V supply within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 5MHz 8051-compatible microprocessor unit with advanced power management and ultra-low-power operation modes.
• Features Single Converter Technology with a 22-bit delta-sigma ADC and digital temperature compensation for high-precision metering.
• Includes a low-power real-time clock with automatic crystal compensation across all power modes.
• Supports field programmable flash memory allowing code and data updates during meter operation.

Applications

• Residential single-phase electricity meters
• Smart grid metering systems compliant with ANSI and IEC standards
• Energy monitoring devices requiring high accuracy over wide dynamic ranges

Procurement Notes

Verify the specific suffix against official Maxim Integrated documentation to confirm memory size and package type. Ensure compatibility with required isolation sensors if using the optional interface features. Confirm RoHS compliance status for the specific revision. Check for any obsolete status or lifecycle notices as this component series may have successor models available.

Selection Notes

Select this SoC for applications demanding high integration and reduced bill of materials through Single Converter Technology. Consider the 71M6541G variant specifically for its balance of processing power and memory capacity suitable for complex tariff structures. Evaluate the need for isolated sensor interfaces to enhance reliability and tamper resistance in harsh environments.

Part Context

This component belongs to the Teridian 71M6x01 family of fourth-generation metering SoCs. It is designed to replace older discrete solutions by integrating analog front-end, digital signal processing, and control logic into a single chip. The family includes variants like 71M6541D, 71M6541F, and 71M6542G, differing primarily in memory size and pin count.

Replacement Considerations

Check for direct replacements such as the 71M6541F or 71M6541D depending on memory requirements. Newer generations from Analog Devices should be evaluated for long-term availability. Pin-to-pin compatibility must be verified before substitution.