Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes

Best Accuracy (1-Φ, Shunt, CT)

FunctionProduct Family
AnalogMCP3911 (Single Phase)
MCP3903 (3-Phase*)
MicrocontrollerPIC24F04KAXXX Family
PIC24F08KLXXX Family
PIC24/dsPIC33 Family

*3-phase connection requires changes in system design, not depicted here

BestAccuracy Block Diagram

Less than 0.2% error rate with dynamic range 8000:1

  • Better than Class 0.2 measurement (based on IEC62053) using CT
  • Better than 0.2% error using a shunt resistor
  • 24-bit dual AFE with integrated PGAs for high accuracy measurements
  • Fast calibration solution available
  • Low overhead software allows sharing MCU with system responsibilities

Metering Video Channel