MLX90365 / Triaxis® mainstream rotary & linear position sensor IC (Analog/PWM)

The MLX90365 is the Generation II½ of Triaxis® position sensor IC. Thanks to an IMC on its surface, the monolithic device senses, in a contactless fashion, the 3 spatial components (i.e. Bx, By and Bz) of the applied magnetic flux density.

This unique sensing principle applied to a position sensor 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 DSP (Digital Signal Processing) to ultimately report the absolute angular position of the end-of-shaft magnet.

MLX90365 Datasheet

Key features MLX90365

Absolute rotary and linear position sensor IC
Triaxis® Hall technology
Simple magnetic design
Programmable transfer characteristic (multi-points - piece-wise-linear)
Selectable output mode: analog (ratiometric) and Pulse Width Modulation (PWM)
12-bit angular resolution
10-bit thermal accuracy
Open/short diagnostics
On-board diagnostics
Over-voltage protection
Under-voltage detection
48-bit ID number
Automotive temperature range
AEC-Q100 qualified
Single die - SOIC-8 package - Lead-free & RoHS compliant
Dual die (full redundant) - TSSOP-16 package - Lead-free & RoHS compliant
Thermal offset correction
Programmable with the PTC-04 and the PTC-04-DB-90316 daughterboard

Magnetic position sensor selection tool

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Alternatively, through measuring individually the horizontal and vertical components, the MLX90365 is able to address linear stroke (displacement) position sensor and also absolute rotary position sensor with a through-shaft magnet. The MLX90365 reports either a ratiometric analog output or a Pulse-Width Modulation (PWM) signal. From the sensing and reporting perspectives, the MLX90365 is an extremely versatile product 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).

The MLX90365 targets and is used in a myriad of non-contacting rotary position sensor applications which are frequently seen in automotive and industrial systems. The device is available in single and dual redundant implementations to cost-effectively address the full range of applications, including safety critical sensing requirements.