Melexis MLX90397 Micropower Triaxis 3D Magnetometer

Melexis MLX90397 Micropower Triaxis® 3D Magnetometer is a position sensor IC featuring Triaxis® Hall Technology and optimized for battery-powered designs. The MLX90397 measures magnetic fields along the three axis X, Y, and Z (Y being in a plane parallel to the surface of the die, Z being perpendicular to the surface). These measurements and the IC temperature are converted into 16-bit words, which are transferred upon request over an I2C communication channel. The device transmits compensated raw measurement data of the selected Bx, By, Bz, or a combination. The MLX90397 is designed for position sensor applications with a ±50mT range and an adaptative range on Bz of ±200mT.

The Melexis MLX90397 Micropower Triaxis 3D Magnetometer is housed in a compact 2.0mm x 2.5mm UTDFN-8 package ideal for space-constrained applications.


  • 3-axis magnetometer device suitable for position sensors applications Triaxis® (Hall Technology)
  • Low power operation
    • 7nA typical idle mode current
    • 1.7V to 3.6V supply voltage
  • Compatible with I2C (0.1MHz, 0.4MHz, or 1MHz)
  • Digital 16-bit output
    • 16-bit magnetic (XYZ)
    • 16-bit temperature
  • At runtime selectable modes
    • Magnetic axis selection
    • Single measurement
    • Continuous mode up to 1.4kHz (XYZ)
  • Low 2µT noise for a 50mT range
  • Ambient temperature range from -40℃ to +105℃
  • 2.0mm x 2.5mm x 0.4mm UTDFN-8 package (JEDEC qualified)
  • RoHS compliant and “Green” package

Block Diagram

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