Use magnetic sensor ICs to develop next-gen HMIs

9th April 2015
Source: Melexis
Posted By : Nat Bowers
Use magnetic sensor ICs to develop next-gen HMIs

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.


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