71M6511-IGTR/F

Overview

The 71M6511-IGTR/F is a single-phase energy metering System on Chip (SoC) from Analog Devices Inc./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, digital temperature compensation, a precision voltage reference, and a 32-bit computation engine. It operates at 3V to 3.6V, supports I2C and UART interfaces, and achieves 0.1% measurement error within a -40°C to +85°C operating range.

Feature Summary

• Integrates a 5MHz 8051-compatible microprocessor unit with flash memory and an LCD driver for compact system design
• Employs Single Converter Technology with a 22-bit delta-sigma ADC and 32-bit computation engine for high-precision metering
• Includes a low-power real-time clock with digital temperature compensation for accurate timekeeping
• Supports optional interfaces to isolated sensors to reduce bill of materials cost and enhance reliability

Applications

• Residential single-phase electricity meters
• Smart grid metering infrastructure
• Prepaid energy metering systems
• Utility metering applications requiring ANSI and IEC compliance

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential supply constraints. Confirm RoHS compliance status and specific ordering suffixes match project requirements. Check current availability as the part may be subject to limited stock or special order conditions. Ensure environmental specifications align with deployment temperatures.

Selection Notes

Select this SoC for applications requiring integrated processing, metering, and display driving capabilities in a small footprint. Consider the 22-bit ADC resolution and 0.1% accuracy for high-precision billing requirements. Evaluate the need for isolated sensor interfaces if magnetic tamper immunity is critical. Verify interface compatibility with existing communication protocols such as I2C or UART.

Part Context

The 71M6511 belongs to the Teridian 71M6x01 series of fourth-generation single-phase metering SoCs. This family is designed to support a wide range of metering applications with minimal external components. The series includes variants like the 71M6541 and 71M6542, offering different memory configurations and pin counts while maintaining core metering performance standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.