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 360 º - complete revolution) and processed by the on-chip DSP (Digital Signal Processing) 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 PWM (Pulse-Width Modulation) signal. From sensing and reporting perspectives, the MLX90340 is an extremely versatile IC for any stand-alone remote position sensor application.

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 90, 180, 270 and 360 º 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 offered as an ASIL-A SEooC (Safety Element out of Context - ISO 26262) component. The MLX90340 is pin-to-pin compatible with the previous generations of Triaxis® position sensor ICs (Gen I: MLX90316/MLX90324/MLX90333 - Gen II: MLX90360 - Gen II 1/2: MLX90365).

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Top features

  • Absolute linear and rotary position sensor IC

  • 4 different pre-programmed analog versions

  • Pin-to-pin compatible with existing generations

  • On-chip diagnostics - ASIL-A (SEooC)

  • Selectable output mode: analog (ratiometric) and PWM

  • 5 V supply

  • Programmable linearization algorithm: arbitrary points (4 points) or piece-wise-linear (17 points)

  • Programmable with the PTC-04 and the PTC04-DB-90316 daughterboard
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Triaxis® absolute position sensor IC - MLX90340

Features and benefits

  • Absolute linear and rotary position sensor IC

  • 4 different pre-programmed analog versions

  • Pin-to-pin compatible with existing generations

  • On-chip diagnostics - ASIL-A (SEooC)

  • Selectable output mode: analog (ratiometric) and PWM

  • 5 V supply

  • Programmable linearization algorithm: arbitrary points (4 points) or piece-wise-linear (17 points)

  • Programmable with the PTC-04 and the PTC04-DB-90316 daughterboard

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