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MLX90340 / Triaxis® mainstream rotary & linear position sensor IC (Analog/PWM) industrial

This unique sensing principle applied to a position sensor IC results into an impressive robustness of the position signal over the mechanical (airgap, off-axis) tolerances. The rotation of this horizontal component is sensed over a wide range (up to 360º) and processed by the on-chip digital signal processing (DSP) to ultimately report the absolute angular position of the end-of-shaft magnet. 

Alternatively, through measuring individually the horizontal and vertical components, the MLX90340 is able to address linear stroke (displacement) position sensors and also absolute rotary position sensors with a through-shaft magnet. The MLX90340 reports either a ratiometric analog output or a pulse-width modulation (PWM) signal. From sensing and reporting perspectives, the MLX90340 is an extremely versatile IC for any stand-alone remote position sensor application. 

Key features MLX90340

  • Triaxis® Hall technology
  • On-chip signal processing for robust absolute position sensing
  • ASIL-A capable, Safety Element out of Context (SEooC)
  • Programmable measurement range
  • Programmable linear transfer characteristic (multi-points 4 or piece-wise-linear 17)
  • Selectable output mode: analog (ratiometric) and PWM
  • 12-bit resolution
  • 10-bit thermal accuracy
  • 48-bit ID number option
  • Single die - SOIC-8 package RoHS compliant
  • Dual die (full redundant) - TSSOP-16 package RoHS compliant
  • Programmable with the PTC-04 and the PTC-04-DB-90316 daughterboard
MLX90333 Melexis

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). Additionally, the MLX90340 is offered in four different factory-programmed analog versions compatible with 90º, 180º, 270º and 360º rotary end-of-shaft applications.

The MLX90340 targets and is used in a myriad of non-contacting linear and rotary position sensor applications which are frequently seen in consumer and industrial systems. The IC is available in single and dual redundant implementations to cost-effectively address the full range of applications.

The MLX90340 is pin-to-pin compatible with the previous generations of Triaxis® position sensor ICs:

  • Gen I: MLX90316
  • Gen I: MLX90324
  • Gen I: MLX90333
  • Gen II: MLX90360
  • Gen II ½: MLX90365

MLX90340 Application Examples

  • Absolute Rotary Position Sensor
  • Absolute Linear Position Sensor
  • Non-Contacting Potentiometer
Melexis Magnetic design simulator
Melexis positicon sensors target market

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