Triaxis® Position Sensor


The MLX90333 is a Triaxis® Position Sensor able to sense any magnet moving in its surrounding through the measurement and the processing of the 3 spatial components of the magnetic flux density vector (i.e. Bx, By and Bz).

The horizontal components (Bx and By) are sensed thanks to an Integrated Magneto-Concentrator (IMC) while the vertical component (Bz) is sensed through conventional Hall plate.

The MLX90333 features a 3D-Magnetometer mode for which the 3D information of the magnetic flux density are reported through SPI.

The MLX90333 features also a contactless position sensor mode suitable for rotary position sensor (through-shaft magnet), linear stroke position sensor (magnet displacement parallel to the device surface) and for 3D/"Joystick" position sensor.

The processed position information is ultimately reported as a ratiometric analog output or as PWM (Pulse-Width Modulation) signal. In case of 3D/"Joystick" mode, the device features 2 independent outputs. A 3-pin SPI (serial interface) mode is also available to transfer the position information to a host-controller.

The output transfer characteristic is fully programmable (e.g. offset, gain, clamping levels, linearity, thermal drift, filtering, range...) to match any specific requirement through end-of-line calibration. The Melexis programming unit PTC-04 communicates and calibrates the device exclusively through the connector terminals (Vdd-Vss-Out).

The MLX90333 targets and is used in a myriad of non-contacting position sensor applications which are frequently seen in automotive and industrial systems. In particular, it is suitable for linear displacement and "joystick" sensing applications.

Triaxis® Position Sensor - MLX90333

Features and benefits

  • Absolute Position Sensor

  • Rotary (Through-Shaft), Linear Stroke, 3D/"Joystick"

  • 3D-Magnetometer Mode (SPI)

  • Simple & Robust Magnetic Design

  • Triaxis® Technology

  • -40°C - +150°C Ambient Temperature Range

  • Single Output (Rotary/Linear) and Dual Outputs (3D/"Joystick")

  • Programmable Linear Transfer Characteristic(s)

  • Selectable Output Mode: Analog (Ratiometric), PWM, Serial Protocol (SPI)

  • 12 bit Angular Resolution

  • 10 bit Angular Accuracy

  • 40 bit ID Number

  • Broken-Track Diagnostic (Open-Vdd, Open-Vss)

  • On-Chip Diagnostics

  • Over-Voltage Protection

  • Under-Voltage Detection

  • AEC-Q100 Qualified - Grade 0

  • Single Die - SOIC-8 Package - Lead-free & RoHS compliant

  • Dual Die (Full Redundant) - TSSOP-16 Package - Lead-free & RoHS compliant

Used in these


  • Automotive - Transmission
  • Automotive - Powertrain
  • Automotive - Hybrid & Electric Powertrain
  • Automotive - Body, HVAC, Comfort & Lighting
  • Automotive - Chassis & Safety
  • Industrial & Robotics
  • Building, Security, Home & Office Automation
  • White Goods & Household Appliances
  • Non-Automotive Transportation

Inspired Engineering

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