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Universal Active Light Sensor Interface From Melexis

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The MLX75030 from Melexis is a universal active light sensor interface which has been designed to allow easy implementation of robust multi-channel, close range optical sensing systems into difficult operational environments. It incorporates four independent simultaneously operating light measurement channels; two taking care of reflection and the other two for ambient light measurement.

This makes the device highly optimized for inclusion in human-machine interfaces (HMI) requiring proximity detection or touchless gesture recognition in environments subject to wide variation in background lighting levels, especially in automotive infotainment systems, white goods and consumer electronics devices.

This IC features two active light reflection measurement channels with integrated ambient light suppression. The active light sensing section is complemented by two logarithmic current sensors which can measure the photocurrent signal from externally connected photodiodes for ambient light sensing. Internal control logic, configurable user registers and SPI communication enable simple, programmable operation.

www.melexis.com

 

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