The MLX90421 is a magnetic position sensor designed for use in cost-sensitive automotive applications including powertrain actuators, pedal positioning, fuel level gauges and transmission systems, though also suitable for industrial implementations. The 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 MLX90421 is pin-to-pin compatible with the previous generations of Triaxis® position sensor ICs. The MLX90421 is a monolithic magnetic position sensor 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.

• Supported output modes: analog (ratiometric) or PWM (Pulse Width Modulation)
• ISO 26262 ASIL-B SEooC (Safety Element out of Context)
• Programmable measurement range
• Programmable linear transfer characteristic with up to 17 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 (redundancy)
  • DMP-4 (VS), Single Die PCB-less solution
  • SMP-3 (VE), Single Die PCB-less solution
  • SMP-4 (VD), Dual Die PCB-less solution
• AEC-Q100 qualified (Grade-0)
• Programmable with the PTC-04 and the PTC-04-DB-HALL06 daughterboard 

The MLX90421 is sensitive to the three components of the magnetic flux density applied to the ICs (i.e. Bx, By and Bz). Programming the sensor determines which axes are used to calculate a rotation or linear position. This allows the MLX90421, with the correct magnetic design, to calculate the absolute position of any moving magnet (e.g. rotary position from 0 to 360 Degrees). It enables the design of non-contacting position sensors that are frequently required for both automotive and industrial applications.

The MLX90421 supports rotary or linear motions, with ratiometric analog or pulse width modulated (PWM) output. Programming the sensor, after assembly into the application, increases the accuracy of the system thanks to the multi-point programmable linearization function.

The MLX90421 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
• Transmission Position Sensor
• Absolute Linear Position Sensor
• Steering Wheel Position Sensor
• Float-Level Sensor
• Non-Contacting Potentiometer