Microchip Technology, Inc.

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The MCP3909 energy-measurement IC and reference design (Part # MCP3909RD-3PH1) enable designers to develop and bring meter designs to market quickly


  • Supports IEC 62053 International Energy-Metering Specification and legacy IEC 1036/61036/687 specs
  • Digital waveform data access through SPI interface
  • 16-bit dual ADC output words, 20-bit multiplier output data words
  • Dual functionality output pins support serial interface access and simultaneous active power-pulse output
  • Two 16-bit, second-order, Delta-Sigma ADCs with multi-bit DAC
  • 0.1% typical active energy-measurement error over 1000:1 dynamic range

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