71M6541D-IGTR/F

Overview

The 71M6541D-IGTR/F is a fourth-generation single-phase metering System on Chip (SoC) from Analog Devices Inc./Maxim Integrated. It integrates a 5 MHz 8051-compatible MPU core, a 22-bit delta-sigma ADC, and a 32-bit computation engine. The device features 32 KB of flash memory, 256 bytes of RAM, and supports up to 51 digital GPIOs. Operating at 3.3 V with an industrial temperature range of -40°C to +85°C, it includes a low-power RTC with digital temperature compensation, LCD drivers, and multiple communication interfaces including UART and SPI.

Feature Summary

• Integrates Single Converter Technology with a 22-bit delta-sigma ADC for high-precision measurement using minimal external components.
• Combines an 8051-compatible microprocessor core with a dedicated 32-bit computation engine for efficient power calculations.
• Includes a low-power real-time clock with digital temperature compensation and integrated LCD driver capabilities.
• Supports optional isolation interfaces for enhanced reliability and immunity to magnetic tampering.

Applications

• Residential single-phase electricity meters
• Smart grid metering infrastructure
• Prepaid energy metering systems

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distribution channels due to the company's acquisition history. Confirm RoHS compliance status as specifications may vary by production batch. Ensure design compatibility with the LQFP-64 package dimensions and thermal requirements before finalizing procurement plans.

Selection Notes

Select this SoC for applications requiring high accuracy over a wide dynamic range without sacrificing board space. The integrated architecture reduces bill-of-materials costs compared to discrete solutions. Consider the available development tools and reference designs when evaluating implementation complexity for certification against ANSI and IEC standards.

Part Context

This component belongs to the Teridian 71M6x01 series of fourth-generation single-phase metering SoCs. It shares architectural similarities with variants like the 71M6541F and 71M6542G but offers specific memory configurations and pin counts tailored for compact residential metering designs within the broader Analog Devices portfolio.

Replacement Considerations

Direct substitutes include other members of the 71M654x family such as the 71M6541F or 71M6541G. Verify pinout compatibility and memory size differences before swapping components in existing designs.

FAQ

What is the maximum current measurement range accuracy?

The device achieves ±0.1% accuracy over a 2000:1 current range.

Does the chip support external sensor interfaces?

Yes, it supports optional interfaces to isolated sensors for enhanced reliability and tamper immunity.