MCP3905RD-PM1: Single Phase Energy Meter


The MCP3905 Energy Meter Reference Design is a stand-alone low cost energy meter. It can act as either a stand alone energy meter, or as the analog front end design for LCD microcontroller based meters.

The MCP3905 design is specified with an energy measurement error of 0.1% typical across 1:500 dynamic range for high accurate energy meter designs. This reference design is compliant with EMC requirements per energy metering standards IEC62053 and legacy IEC61036, IEC1046 and IEC687.


  • Demonstration board is a ready to use single-chip low cost energy meter

  • Direct connection to line for energy meter, no transformers required

  • On-board power supply circuitry

  • Resistive network and Output LED for meter calibration

  • Resistor shorts for gain and frequency selection


Manufacturer Microchip Technology
Category Power Management
Sub-Category Energy Metering for AC
Eval Board Part Number MCP3905RD-PM1-ND
Eval Board Supplier Microchip Technology
Eval Board Normally In Stock
Sensing Method Shunt
Features AC/DC Power Supply
Active Energy Measurement
AC Voltage 220 VAC
Max AC Current 40 A (10A Nom)
Component Count + Extras 67 + 8
Design Author Microchip
Main I.C. Base Part MCP3905
Date Created By Author 2005-04
Date Added To Library 2011-03

Eval Board

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