MCP3909T-E/SS

Overview

The MCP3909T-E/SS is a single-phase energy measurement integrated circuit manufactured by Microchip Technology, housed in a 24-lead SSOP package. It supports the IEC 62053 international energy metering specification and incorporates two 16-bit delta-sigma analog-to-digital converters with programmable gain up to 16. The device features an ultra-low drift on-chip voltage reference of 15 ppm/°C and operates within a supply voltage range of 4.5 V to 5.5 V. It provides active power pulse output and an SPI interface for accessing ADC channels and multiplier data.

Feature Summary

• Supports IEC 62053 international energy metering specifications
• Integrates two 16-bit delta-sigma ADCs with programmable gain
• Features ultra-low drift on-chip voltage reference
• Provides frequency proportional to average active power

Applications

• Single-phase residential energy metering
• Low-cost transformer-less meter designs
• Active power measurement systems

Procurement Notes

Verify the specific suffix 'E' indicates the industrial temperature grade and 'SS' denotes the 24-SSOP package configuration. Confirm that the 'T' prefix specifies tape-and-reel packaging. Ensure compatibility with the required operating voltage range of 4.5 V to 5.5 V. Check for AEC-Q100 Grade 1 qualification if automotive applications are intended. Validate RoHS compliance status against current manufacturing standards.

Selection Notes

Select this component for applications requiring certified IEC 62053 compliance in single-phase environments. The integrated low-drift reference eliminates external precision components. Consider the 16-bit resolution and programmable gain for varying signal levels. Evaluate the SPI interface requirements for system integration. Compare power consumption metrics against other AFE options for battery-operated constraints.

Part Context

This part belongs to the MCP3909 family of energy measurement ICs designed for utility metering. It serves as an analog front end for converting electrical signals into digital data for microprocessor processing. The device is commonly paired with PIC microcontrollers for complete metering solutions. It represents a specialized solution for accurate energy billing and monitoring.

Replacement Considerations

Public confirmed substitute part numbers: MCP3909-I/SS, MCP3909T-I/SS, MCP3909-E/SS.