Sensor for ambient light and proximity targets mobile phones

November 12, 2012 // By Christoph Hammerschmidt
The APM-16D25-11-DF8 from Everlight Electronics combines an ambient light and proximity sensor with an integrated IR transmitter in a compact DFN package. To optimize the sensitivity, the package includes a lens which was designed based on a highly precise optical simulation with 1 million light rays to produce an accurate model.

caused by IR stray light. In order to overcome this challenging problem, the vendor implemented a unique package design to keep this effect to a minimum. Moreover, the proximity sensor comes with a background noise cancellation algorithm to improve the performance under the influence of ambient IR light produced by lamps or sunlight.

Designed to reduce the power consumption of handheld devices like smart phones, mobile phones and PDAs, the APM-16D25-11-DF8's proximity sensor has a fast sensing time with a short ON time for the IR LED to keep the power consumption low without sacrificing on sensitivity.

The APM-16D25-11-DF8's ambient light sensor incorporates a special optical filtering for closest mimic with human eye spectral response. Everlight offers eight different available settings - four different integration times and two gain settings - to achieve the best matching resolution and illumination ranges under different application conditions.

Samples are available now, volume production is scheduled to start in January 2013.

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