Use magnetic sensor ICs to develop next-gen HMIs

9th April 2015

Melexis

Nat Bowers

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Datasheet

In order to support the innovative MLX90393 programmable magnetic sensor IC, Melexis has announced an EVB. The MLX90393 EVB provides a platform for constructing a wide variety of HMIs, from relatively simple slide, push/pull and linear swipe switches through to more complex 3D sensing systems, such as joysticks or rotary knobs with push functions included.

Melexis’ proprietary Triaxis technology enables the 16-bit resolution MLX90393 sensor IC on each EVB to deliver a digital output proportional to the detected magnetic flux density along X, Y and Z axes. There is also provision for thermal measurement.

The IC acts like a building block for position sensing systems in a broad spectrum of applications. It presents engineers with a wide array of configurable parameters, allowing them to optimise their system for either high speed measurement, elevated signal integrity or low power consumption.

Both SPI and I²C interfaces are featured on the EVB, making it easy to integrate with an external MCU. A pad is incorporated onto the board to connect a decoupling capacitor if required, as well as pads for optional pull-up and pull-down resistors for I²C addressing and bus line supply. The 30x30mm board operates over a temperature range from -20 to +85°C.

The EVB is supplied with a MLX90393 IC soldered directly to the PCB, along with three extra ICs to accompany it. A QR code link printed on the underside of the board permits immediate access to all the relevant documentation available on the Melexis website. Sample code can also be downloaded from here.