71M6543F-IGT/F

Overview

The 71M6543F-IGT/F is a third-phase metering System on Chip (SoC) from the Teridian 71M65xx series. It integrates an 8051-compatible MPU core, 128 kB Flash, and 5 kB SRAM within an LQFP-100 package. The device features a 22-bit delta-sigma ADC with four differential current and three voltage sensor inputs. It supports CT, shunt, and Rogowski coil sensors, achieving ±0.1% accuracy over a 2000:1 range. Operating at 5 MHz with 3.3 V supply, it includes an RTC, LCD driver for up to 336 segments, and dual UART interfaces.

Feature Summary

• Integrates Single Converter Technology with a 22-bit delta-sigma ADC for high-precision measurement
• Supports multiple current sensor types including CT, shunt, and Rogowski coils
• Includes a low-power real-time clock with digital temperature compensation
• Features an integrated LCD driver capable of driving complex displays

Applications

• Three-phase residential electricity meters
• Commercial energy monitoring systems
• Smart grid distribution metering infrastructure

Procurement Notes

Verify component authenticity through authorized Analog Devices or Silergy distributors. Confirm RoHS compliance status as documentation varies by manufacturing batch. Ensure the specific suffix matches required packaging options such as tube or reel configurations. Validate that the device meets regional regulatory standards for utility metering applications before final procurement.

Selection Notes

Select this model for applications requiring three-phase measurement capabilities. The 128 kB Flash provides ample storage for advanced firmware and data logging. Verify interface requirements against available UART and GPIO pins. Consider thermal performance within the specified operating temperature range during system design.

Part Context

This component belongs to the Teridian 71M65xx family of metering SoCs. These devices are designed to replace discrete analog front-end solutions with integrated single-converter technology. The series offers scalable memory and I/O options for various metering complexities while maintaining high accuracy and low power consumption.

Replacement Considerations

Check for direct substitutes within the 71M654x series based on phase count and memory size. Verify pin compatibility if replacing with variants like the 71M6542G. Ensure software migration paths exist for different MPU core configurations.