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MAXQ3181 - Polyphase AFE

General Description

The MAXQ3181 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, active power and energy, and many other metering parameters of a polyphase load.

Key Features

  • Compatible with 3-Phase/3-Wire, 3-Phase/4-Wire, and Other 3-Phase Services.
  • 0.1% Active Power and Energy Linearity Error.
  • 0.5% Apparent Power and Energy Linearity Error.
  • 0.5% Linearity Errors for RMS Voltage and RMS Current.
  • Neutral Line Current Measurement.
  • Line Frequency (Hz).
  • Power Factors.
  • Phase Sequence Indication.
  • Phase Voltage Absence Detection.
  • Programmable Pulse Width.
  • Programmable No-Loa.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4668; Rev 1; 12/09 Low-Power, Active Energy, Polyphase AFE General Description The MAXQ3181 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, active power and energy, and many other metering parameters of a polyphase load. The computed results can be retrieved by an external master through the on-chip serial peripheral interface (SPI™) bus. This bus is also used by the external master to configure the operation of the MAXQ3181 and monitor the status of operations. The MAXQ3181 performs voltage and current measurements using an integrated ADC that can measure up to seven external differential signal pairs. An eighth differential signal pair is used to measure the die temperature.