MCP3906A-I/SS

Overview

The MCP3906A-I/SS is a single-phase energy metering IC designed for residential applications, compliant with IEC 62053 standards. It features two 16-bit Sigma-Delta ADCs and operates within a 4.5 V to 5.5 V supply range. The device provides a typical measurement error of 0.1% across a 1:500 dynamic range. It includes an ultra-low drift internal voltage reference (<15 ppm/°C) and fixed-function on-chip DSP for active power calculation. Operating temperatures span from -40°C to +85°C, and it is housed in a 24-pin SSOP package.

Feature Summary

• Integrates dual 16-bit delta-sigma analog-to-digital converters for high-precision signal acquisition
• Includes dedicated hardware digital signal processing modules for direct active power computation
• Features an integrated low-drift bandgap voltage reference to minimize temperature gradient effects
• Provides high-output drivers capable of directly driving mechanical counters to reduce field failures

Applications

• Single-phase residential energy meters
• Analog front-end designs for LCD microcontroller-based metering systems
• High-accuracy energy measurement devices requiring compliance with IEC 62053 standards

Procurement Notes

Verify the specific suffix (e.g., 'A') against the manufacturer's current product line status, as designations may indicate automotive qualification or specific revision levels. Confirm the package type matches the required footprint, noting variations between tube and tape-and-reel packaging options available for this component family. Ensure environmental compliance documentation aligns with project requirements.

Selection Notes

Select this component for single-phase applications requiring integrated metering functionality without external DSP resources. The built-in power calculation reduces system complexity compared to generic ADC solutions. Consider the 1:500 dynamic range specification when designing shunt or CT interfaces to ensure accurate measurement across varying load conditions within the specified industrial temperature range.

Part Context

This part belongs to the MCP3906 series of specialized data acquisition ADCs intended for energy metering. It is manufactured by Microchip Technology and falls under the category of professional data conversion integrated circuits. The device is distinct from general-purpose ADCs due to its embedded metering-specific algorithms and calibration features tailored for utility-grade accuracy.

Replacement Considerations

Public confirmed substitute part numbers are not identified in the provided documentation. Designers should consult official Microchip cross-reference guides for potential alternatives.