MLX90316 / Triaxis® mainstream rotary position sensor IC (Analog/PWM/SPI)
The MLX90316 is a Triaxis® rotary position sensor IC providing the angular position of a small dipole magnet rotating above the device surface (end-of-shaft magnet). Thanks to an IMC on its surface, the monolithic device senses, in a contactless fashion, the horizontal component of the applied magnetic flux density.
This unique sensing principle applied to a rotary position sensor results into an impressive robustness of the angular position over the mechanical (air-gap, off-axis) tolerances. The rotation of this horizontal component is sensed over a wide range (up to 360º) and processed by the on-chip DSP to ultimately report the absolute angular position of the magnet either as a ratiometric analog output or as Pulse-Width Modulation (PWM) signal or as a 14-bit data accessible through a 3-pin SPI (serial interface) channel.
MLX90316 / Triaxis® mainstream rotary position sensor IC (Analog/PWM/SPI)
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The MLX90316 is a Triaxis® rotary position sensor IC providing the angular position of a small dipole magnet rotating above the device surface (end-of-shaft magnet). Thanks to an IMC on its surface, the monolithic device senses, in a contactless fashion, the horizontal component of the applied magnetic flux density. This unique sensing principle applied to a rotary position sensor results into an impressive robustness |
of the angular position over the mechanical (air-gap, off-axis) tolerances. The rotation of this horizontal component is sensed over a wide range (up to 360º) and processed by the on-chip DSP to ultimately report the absolute angular position of the magnet either as a ratiometric analog output or as Pulse-Width Modulation (PWM) signal or as a 14-bit data accessible through a 3-pin SPI (serial interface) channel. |
Key features MLX90316
- Absolute rotary position sensor IC
- Simple and robust magnetic design
- Triaxis® Hall technology
- Programmable angular range up to 360 degrees
- Selectable output mode: analog (ratiometric), PWM or serial protocol (SPI)
- 12-bit angular resolution over 360 degrees
- 10-bit angular thermal accuracy
- 40-bit ID number
- -40°C to 150°C ambient temperature range
- Broken-track diagnostic (open-Vdd, open-Vss)
- On-chip diagnostics
- Single die SOIC-8 package RoHS compliant
- Dual die (full redundant) TSSOP-16 package RoHS compliant
MLX90316 Application Examples
- Absolute Rotary Position Sensor
- Steering Wheel Position Sensor
- Pedal Position Sensor
- Motor-shaft Position Sensor
- Throttle Position Sensor
- Float-Level Sensor
- Ride Height Position Sensor
- Non-Contacting Potentiometer
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 MLX90316 targets a myriad of non-contacting rotary position sensor applications which are frequently seen in automotive and industrial systems. This device is available in single and dual redundant implementations to cost-effectively address the full range of applications, including safety critical sensing requirements.
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