78M6631-IM/F

Overview

The 78M6631-IM/F is a three-phase power measurement and monitoring System on Chip (SoC) from Analog Devices/Maxim Integrated. It integrates a 10 MHz 8051-compatible MPU core, Teridian’s Single Converter Technology featuring a 22-bit delta-sigma ADC, and a 32-bit compute engine. The device supports both Delta and Wye configurations with six analog inputs for voltage and current sensing. It provides high accuracy over a wide dynamic range and includes interfaces such as UART, I²C, and SPI for host communication.

Feature Summary

• Integrates a 10 MHz 8051-compatible microprocessor unit with hardware watchdog timer
• Features Teridian Single Converter Technology with 22-bit delta-sigma conversion and 32-bit compute engine
• Supports configurable Delta or Wye three-phase connection topologies
• Provides multiple host interface options including UART, I²C, and high-speed slave SPI

Applications

• Three-phase power distribution units
• Building automation systems
• Data center power monitoring
• Motor run applications
• Solar inverters

Procurement Notes

Verify the specific suffix requirements for the IM/F designation against official datasheets to ensure correct package and temperature grade compatibility. Confirm availability status as supply constraints may apply. Validate that the selected variant meets all required electrical specifications for the target application environment before procurement.

Selection Notes

Select this component for applications requiring integrated three-phase metering with high precision. Ensure the design accommodates the 3.3V operating voltage and utilizes the available flash memory for firmware storage. Consider the interface requirements for UART, I²C, or SPI when designing the host processor connection.

Part Context

This part belongs to the 78M6631 series of highly integrated power measurement SoCs. It is designed specifically for three-phase applications requiring compliance with standards such as IEC 62053 and ANSI C12.20. The series leverages Teridian’s proprietary converter technology to achieve high accuracy across wide current ranges.

Replacement Considerations

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