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Triaxis® Position Sensor


The Melexis MLX90392 is part of the Triaxis® unique sensing solution, an innovative magnetic sensor technology capable of very precise three axis magnetic field measurements from a single sensor.

Experience endless angular, linear and 3D applications with Triaxis®, a sensor which features patented innovative magnetic sensor technology that enables measurement of the three magnetic flux components (BX, BY and BZ) in a single integrated circuit, the MLX90392 utilizes a unique Integrated Magnetic Concentrator (IMC®).

Melexis Triaxis Position Sensor

Using the three magnetic components, it is possible to create 2D or 3D sensors that determine rotary (angle), linear (stroke), or even joystick type motion as well as 3D-magnetometers that can output the individual magnetic (BX, BY, and BZ) components.


MLX90392 Sensor Benefits

  • High sensitivity and flexibility allows a wide range of magnet shapes (disc, rod, square...) and chemistry (ferrite, NeFeB, SmCo, AlNiCo…) to be used

  • No wearout or drift thanks to noncontacting measurement principle

  • I2C protocol for easy interfacing to nearly any microcontroller

  • Low and configurable power consumption with 1.8V supply for power constrained applications

  • Wide temperature range of -40 to 85 degC


  • Battery-powered applications

  • Home security

  • Home Internet of Things (IoT)

  • Human to machine interfaces (HMI)

  • PC peripherals

  • Gaming / Joysticks

  • Metering (Anti-tampering)

  • Liquid level



More Information on Melexis Triaxis® Magnetometers


Melexis Triaxis®Magnetometers

The Melexis Triaxis® Magnetometers MLX90392 and MLX90393 are monolithic sensor ICs sensitive to the flux density applied orthogonally and parallel to the IC surface. These devices make magnetic measurements along the 3 axes using the Melexis proprietary Triaxis® technology (X and Y being in a plane parallel to the surface of the die, Z being perpendicular to the surface) and also offer a temperature output signal. Those measurements are then converted into 16-bit words which are transferred over an I2C or SPI (MLX90393 only), where the IC is a slave on the bus.

The MLX90392/3 magnetic field sensor ICs are designed for micropower applications, with programmable duty cycles in the range of 0.1% to 100%. They can be reprogrammed to different modes and with different settings at run-time.

By selecting which axes are to be measured, the raw data can be used as input for further post-processing, such as for joystick applications, rotary knobs, and more complex 3D position sensing applications. Unparallelled performance is achieved with this sensor, which is primarily targeting industrial and consumer applications.

Triaxis® Magnetometers Packages

The MLX90392/3 sensors feature a UTDFN-8 ultra-thin flat no-lead 8-pin package, measuring just 2x2.5x0.4 mm, which helps designers tackle space-constrained applications.

For a broader feature set, the MLX90393 also comes in a small QFN-16 3x3x1mm package with wettable flanks, with additional functions available through extra pins.

Melexis: Next-Gen Triaxis® Position Sensor IC Demo