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Sensor integrates proximity, illuminance in tiny package

Posted: 09 May 2014  Print Version  Bookmark and Share

Keywords:Murata  sensor  proximity  illuminance  photoreceptor 

Murata Europe has revealed a component that integrates both optical proximity and illuminance sensors. Claimed to be the world's smallest, the sensor measures 3.05×2.10×1.10mm.

The surface mounted LT-1PA01 sensor uses a photoreceptor to measure the distance to an object based on the amount of returned light. Another photoreceptor is employed to detect the amount of ambient brightness. Such sensors are widely used in smartphones to darken the screen when the phone is near the user's face during a call or to increase the brightness of the screen's backlight when used outdoor.

The sensor has a low power profile, consuming only 80µA during proximity sensing. Illuminance sensing angle is ±45 degrees at 50 per cent, with a sensing distance of up to 70mm with grey card.

The sensor operates at 3.3VDC. It communicates with the host processor via I2C serial communications. The company will begin its volume production this month.

Murata today announced what it believes to be the world's smallest combined proximity and illuminance sensor.

LT-1PA01

The LT-1PA01 sensor uses photoreceptors to integrate proximity and illuminance functionalities into a footprint package that measures only 3.05×2.10×1.10mm.





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