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AK09940 Description

AK09940 is ultrahigh precision 3-axis electronic magnetometer IC with ultrahigh sensitive TMR sensor technology. Small package of AK09940 incorporates magnetic sensors for detecting magnetic field in the X-axis, Yaxis, and Z-axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. Self-test function is also incorporated.

AK09940 Key Features

  • 3-axis magnetometer device
  • Built-in A to D Converter for magnetometer data out
  • 18-bit data out for each 3-axis magnetic ponent
  • Sensitivity: 10 nT/LSB (typ.)
  • Range: ±1200 µT (max.)
  • Serial interface
  • I2C bus interface
  • 4-wire SPI
  • Operation mode
  • Power-down, Single measurement, Continuous measurement and Self-test