The MLX90423 is a magnetic position sensor suited for demanding but cost-conscious automotive applications. The device blends high accuracy for long strokes (up to 30mm), stray field immunity (SFI) and ISO26262 (supports up to ASIL D system integration). This solution is ideal for automotive ADAS applications with space constraints such as braking systems (brake rod). MLX9042x devices have superior capabilities in terms of functional safety, Absolute Maximum Ratings (AMR) and electromagnetic compliance (EMC) characteristics. They also support operating temperature up to 160 °C

The MLX90423 is pin-to-pin compatible with the previous generations of Triaxis® position sensor ICs. The MLX90423 is a monolithic magnetic position processor IC. It consists of a Triaxis® Hall magnetic front end, an analog to digital signal conditioner, a DSP for advanced signal processing and a programmable output stage driver.

• Multiple output modes supported
  • Analog (ratiometric)
  • PWM (Pulse Width Modulation)
  • SENT output (SAE J2716 APR2016)
• ISO 26262 SEooC (Safety Element out of Context)
  • ASIL C for SENT and PW
  • ASIL B for analog
• Programmable measurement range
• Programmable linear transfer characteristic (12 to 16 multi-points)
• Operating temperature from -40°C to 160°C
• Triaxis® Hall technology
• On chip signal processing for robust absolute position sensing
• Packages, RoHS compliant
  • SOIC-8 (DC), single die
  • TSSOP-16 (GO) dual die
  • SMP-3 (VE), single die PCB-less solution
• Robustness against stray magnetic field up to 5 mT (or 4 kA/m) as per ISO 11452-8. Stray field immune angle sensing up to 360°
• AEC-Q100 qualified (Grade-0)
• Programmable with the PTC-04 and the PTC-04-DB-HALL06 daughterboard

The MLX90423 is sensitive to the three components of the magnetic flux density applied to the ICs (i.e. Bx, By and Bz). This allows the MLX90423 with the correct magnetic circuit to decode the absolute position of any moving magnet. It enables the design of non-contacting position sensors that are frequently required for both automotive and industrial applications.

The MLX90423 provides ratiometric analog, PWM output or SENT frames encoded according to a Secure Sensor format. The circuit delivers enhanced serial messages providing error codes, and user-defined values. Programming the sensor, after assembly into the application, increases the accuracy of the system thanks to the multi-point programmable linearization function. The MLX90423 is compatible with the PTC-04 (DB-HALL06) for mass-production programming.

Absolute Rotary Position Sensor

• Pedal Position Sensor
• Throttle Position Sensor
• Ride Height Position Sensor

Absolute Linear Position Sensor

• Steering Wheel Position Sensor
• Float-Level Sensor
• Non-Contacting Potentiometer