MCP3909T-I/SS

Overview

The MCP3909T-I/SS is an energy measurement integrated circuit designed for single-phase residential metering applications. It supports the IEC 62053 international standard and incorporates two 16-bit delta-sigma analog-to-digital converters with programmable gain up to 16. The device provides active power pulse output proportional to average real power and offers simultaneous serial SPI interface access to ADC channels and multiplier data. It features an ultra-low drift on-chip voltage reference of 15 ppm/°C typical, low supply current of 4 mA typical, and operates within a 2.7V to 5.5V digital supply range.

Feature Summary

• Supports IEC 62053 international energy metering specification
• Integrates two multi-bit DAC second-order 16-bit Delta-Sigma ADCs
• Provides active power pulse output proportional to average real power
• Features ultra-low temperature drift on-chip voltage reference

Applications

• Single-phase residential energy metering
• IEC 62053 compliant utility metering systems
• Low-cost transformer-less meter designs

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 20-SSOP specification. Ensure compliance with RoHS and REACH directives as documented in official datasheets. Validate lot traceability and storage conditions prior to assembly to maintain moisture sensitivity level ratings.

Selection Notes

Select this component for applications requiring certified IEC 62053 compliance and high-precision active power measurement. The integrated reference and dual ADC architecture simplify design by reducing external component count. Consider the SPI interface requirements for data acquisition and the pulse output capability for direct frequency-based power monitoring in residential metering contexts.

Part Context

This part belongs to the MCP3909 family of energy measurement ICs from Microchip Technology. It is specifically engineered for single-phase metering solutions that demand accuracy and regulatory compliance. The T-I/SS suffix indicates tape-and-reel packaging, industrial temperature range operation, and the SSOP-20 surface-mount package format suitable for compact PCB layouts.

Replacement Considerations

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