71M6543FT-IGT/F

Overview

The 71M6543FT-IGT/F is a single-phase metrology System-on-Chip (SoC) from the 71M654x series, manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 8051 core with a maximum clock frequency of 5 MHz, 64 KB of program memory, and 5 KB of data RAM. The device features a 22-bit ADC resolution and supports I2C and UART interfaces. Operating at a supply voltage of 3.3 V, it is housed in an LQFP-64 package and designed for precision energy metering applications.

Feature Summary

• Integrates an 8051 microcontroller core with dedicated metrology processing capabilities
• Features a high-resolution 22-bit delta-sigma analog-to-digital converter
• Supports bidirectional digital communication via I2C and UART interfaces
• Designed for compatibility with non-isolated sensors such as resistive shunts

Applications

• Single-phase energy metering systems
• Precision power monitoring devices
• Smart meter infrastructure components
• Industrial metering applications requiring isolated sensor integration

Procurement Notes

Verify the specific suffix 'FT-IGT/F' against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with the 71M654x family design requirements. Confirm that the component status is active for new designs, as some variants in this series may be obsolete. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a single-phase metering solution with integrated MCU and high-precision ADC is required. It is suitable for designs utilizing resistive shunts instead of costly isolation transformers. Consider the LQFP-64 package constraints and 3.3 V operating voltage during PCB layout. Verify interface compatibility with host systems using I2C or UART protocols.

Part Context

This part belongs to the 71M654x series of isolated sensor ICs and metrology SoCs. It works in conjunction with 71M6xxx isolated sensor ICs to enable cost-effective, tamper-resistant metering solutions. The series is designed to exceed IEC 62053 and ANSI C12.20 standards, offering immunity to magnetic tampering and enhanced reliability for single-phase applications.

Replacement Considerations

Check for direct substitutes within the 71M654x family, such as the 71M6543F-IGT/F, ensuring pinout and electrical characteristics match. Verify if older variants like the 71M6542GT are compatible, noting potential differences in package or performance metrics.