71M6534H-IGTR/F

Overview

The 71M6534H-IGTR/F is a three-phase metering System on Chip (SoC) manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 80515 user MPU core with 256 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 sensors. It provides ±0.1% accuracy at a 2000:1 dynamic range. Key peripherals include two UART interfaces, a real-time clock (RTC), and GPIOs for LCD driving up to 300 segments. It operates within a -40°C to +85°C temperature range in an LQFP-120 package.

Feature Summary

• Integrates high-precision analog front-end with dedicated sensor inputs for current and voltage measurement.
• Includes an embedded 80515 microprocessor core for local data processing and control logic.
• Supports direct connection to various current sensing technologies including CT, shunt, and Rogowski coils.
• Features integrated display driver capability for segment-based LCD panels.

Applications

• Three-phase energy metering systems
• Smart grid distribution automation units
• Industrial power monitoring equipment

Procurement Notes

Verify the specific suffix 'IGTR/F' against official datasheets to confirm lead-free status and tape-and-reel packaging configuration. Ensure compatibility with the LQFP-120 footprint during PCB layout. Confirm that the 256 kB Flash variant meets firmware storage requirements compared to lower-capacity models in the series.

Selection Notes

Select this model when high accuracy across a wide dynamic range is required for three-phase applications. The inclusion of multiple sensor input types allows flexibility in current sensing architecture. Consider the 80515 core performance for complex tariff structures or communication protocols. Verify if the 256 kB Flash size is necessary versus smaller variants like the 71M6533.

Part Context

This component belongs to the 71M65xx series of metering SoCs from Maxim Integrated, now part of Analog Devices. These devices are designed to replace discrete metering solutions by integrating ADCs, MPUs, and peripherals. The 71M6534H represents a higher-performance tier with increased program memory compared to base models, suitable for advanced utility applications.

Replacement Considerations

The 71M6534 is a non-H variant with 128 kB Flash; verify if reduced memory suffices. The 71M6533 series offers different memory configurations but may have fewer sensor inputs. Cross-reference pinouts and electrical characteristics before substitution.