Triaxis® mainstream rotary, linear and joystick position sensor IC (Analog/PWM/SPI)
MLX90333 Melexis
The MLX90333 is a Triaxis® position sensor IC able to sense any magnet moving in its surrounding through the measurement and the processing of the three spatial components of the magnetic flux density vector.
Top features
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Absolute 3D position sensor IC
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Simple and robust magnetic design
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Triaxis® Hall technology
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Rotary (through-shaft), linear stroke, 3D/"joystick"
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3D magnetometer mode (SPI)
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-40°C - +150°C ambient temperature range
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Single output (rotary/linear) and dual outputs (3D/"joystick")
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Programmable linear transfer characteristics (alpha, beta)
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Selectable output mode: analog (ratiometric), PWM, serial protocol (SPI)
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12-bit angular resolution
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10-bit angular thermal accuracy
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40-bit ID number
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Broken-track diagnostic (Open-Vdd, Open-Vss)
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On-chip diagnostics
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Over-voltage and under-voltage protection
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AEC-Q100 qualified - grade 0
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Single die - SOIC-8 package - Lead-free & RoHS compliant
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Dual die (full redundant) - TSSOP-16 package - Lead-free & RoHS compliant
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Programmable with the PTC-04 and the PTC-04-DB-90316 daughterboard
Product description
The MLX90333 is a Triaxis® position sensor IC able to sense any magnet moving in its surrounding through the measurement and the processing of the three spatial components of the magnetic flux density vector (i.e. Bx, By and Bz).
The horizontal components (Bx and By) are sensed thanks to an IMC while the vertical component (Bz) is sensed through conventional Hall plate.
The MLX90333 features a 3D magnetometer mode for which the 3D information of the magnetic flux density are reported through SPI.
The MLX90333 features also a contactless position sensor mode suitable for rotary position sensor (through-shaft magnet), linear stroke position sensor (magnet displacement parallel to the device surface) and for 3D/"Joystick" position sensor.
The processed position information is ultimately reported as a ratiometric analog output or as PWM signal. In case of 3D/"joystick" mode, the device features two independent outputs. A 3-pin SPI (serial interface) mode is also available to transfer the position information to a host-controller.
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 MLX90333 targets and is used in a myriad of non-contacting position sensor applications which are frequently seen in automotive and industrial systems. In particular, it is suitable for linear displacement and "joystick" sensing applications.
Features and benefits
-
Absolute 3D position sensor IC
-
Simple and robust magnetic design
-
Triaxis® Hall technology
-
Rotary (through-shaft), linear stroke, 3D/"joystick"
-
3D magnetometer mode (SPI)
-
-40°C - +150°C ambient temperature range
-
Single output (rotary/linear) and dual outputs (3D/"joystick")
-
Programmable linear transfer characteristics (alpha, beta)
-
Selectable output mode: analog (ratiometric), PWM, serial protocol (SPI)
-
12-bit angular resolution
-
10-bit angular thermal accuracy
-
40-bit ID number
-
Broken-track diagnostic (Open-Vdd, Open-Vss)
-
On-chip diagnostics
-
Over-voltage and under-voltage protection
-
AEC-Q100 qualified - grade 0
-
Single die - SOIC-8 package - Lead-free & RoHS compliant
-
Dual die (full redundant) - TSSOP-16 package - Lead-free & RoHS compliant
-
Programmable with the PTC-04 and the PTC-04-DB-90316 daughterboard
Documents and tools
Datasheet(s)
Product flyer(s)
IC handling and assembly
Magnet suppliers
Related tech talks
Videos
Back-end calibration of magnetic position sensors
This video explains the concept of the back-end calibration: a feature of our magnetic position sensors that allows you to compensate for non-linearity error in your application. Different methods of calibration and examples are presented. This will help you understand how to use the calibration and why you may need it.
