78M6610+PSU/B48T

Overview

The 78M6610+PSU/B48T is a single-phase energy metering System on Chip (SoC) manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 8-bit microcontroller with high-precision analog front-end capabilities for utility metering applications. The device operates within a supply voltage range of 3 V to 3.6 V and draws a typical supply current of 8.1 mA. It features an input impedance between 30 kOhm and 90 kOhm, supporting I/O levels with a low voltage of 0.8 V and high voltage of 2 V. Designed for surface mount installation, it is housed in a compact 24-TQFN (4x4) package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a microcontroller core with dedicated analog signal processing for single-phase energy measurement
• Provides precise voltage and current sensing through integrated high-impedance inputs
• Supports standard digital communication interfaces for data retrieval and configuration

Applications

• Single-phase residential electricity meters
• Smart grid endpoint devices
• Prepaid energy metering systems

Procurement Notes

Verify component authenticity through authorized distribution channels due to discontinued status at major retailers. Confirm package integrity and pin alignment against the 24-TQFN specification before integration. Ensure design compatibility with the specified 3 V to 3.6 V power domain and thermal requirements for the -40°C to +85°C operational range.

Selection Notes

Select this component for designs requiring integrated MCU and metering functionality in a small footprint. Evaluate the 30 kOhm to 90 kOhm input impedance against sensor requirements. Consider the 8.1 mA supply current for battery life calculations if applicable. Verify that the 24-TQFN package fits the PCB layout constraints.

Part Context

This part belongs to the 78M6610 series of energy metering SoCs from Maxim Integrated, now part of Analog Devices. These chips are designed to replace discrete metering solutions by combining processing and analog front-ends. The series targets the utility industry's need for accurate, cost-effective, and space-efficient metering hardware.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Check for updated revisions within the 78M6610 family or consult manufacturer engineering support for direct replacements.