71M6534-IGTR/F

Overview

The 71M6534-IGTR/F is a three-phase metering System on Chip (SoC) manufactured by Analog Devices Inc. under the Maxim Integrated brand. It integrates an 80515 user MPU core with 128 kB of Flash memory and 4 kB of SRAM. The device features four differential current inputs and three voltage inputs, supporting CT, shunt, and Rogowski coil sensors. It achieves ±0.1% accuracy over a 2000:1 range. Key peripherals include a Real-Time Clock (RTC), an LCD driver capable of 300 segments (75x4), 52 GPIOs, and two UART interfaces. It operates within a temperature range of -40°C to +85°C and is housed in an LQFP-120 package.

Feature Summary

• Integrates a high-precision 22-bit ADC architecture for accurate energy measurement across multiple phases.
• Includes a dedicated 32-bit computation engine optimized for complex power calculations and compliance with international standards.
• Features an integrated LCD driver with extensive segment support for direct display interfacing without external controllers.
• Supports flexible sensor input configurations compatible with various current sensing technologies including CTs and shunts.

Applications

• Three-phase residential and commercial electricity meters
• Smart grid metering infrastructure requiring high accuracy
• Industrial energy monitoring systems
• Utility-grade power quality analyzers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential supply constraints. Confirm RoHS compliance status as indicated in specific datasheets, noting that some listings may vary. Ensure the LQFP-120 package variant matches your PCB footprint requirements. Check for any specific ordering suffixes that might affect pinout or functionality. Validate thermal performance specifications against your enclosure design limits.

Selection Notes

Select this SoC for applications requiring precise three-phase measurement with integrated processing capabilities. The 128 kB Flash allows for complex firmware updates and data logging. Consider the 52 GPIO count for additional peripheral integration. The built-in RTC supports time-of-use billing schemes. Evaluate the LCD driver capacity against display requirements to minimize external components. Ensure compatibility with existing development tools for the 80515 core.

Part Context

This component belongs to the 71M65xx series of multi-phase metering SoCs from Analog Devices/Maxim Integrated. It shares architectural similarities with the 71M6533 and 71M6534H but offers specific phase counts and I/O configurations tailored for three-phase applications. The series is designed to meet stringent ANSI and IEC metrology standards while reducing bill-of-materials costs through high integration.

Replacement Considerations

The 71M6534H is a related variant within the same family. Verify pin-to-pin compatibility and functional equivalence before substitution. Differences in package type or specific peripheral availability must be confirmed via official documentation. No other direct substitutes are publicly confirmed for this exact part number configuration.