em30916 series is a low-power i2c interface 5in1 module includes ambientlight sensor (als), long-distanceproximity sensor (ps), irsensors, and internal current drivers with ir vcseldiode. it is designed for applications such as smartphone and tablets with capacitive touch panel.
em30916 is application specific for custom-made products and no need of a controller toinitialize and control. the gain and threshold valuescould be custom-made and detection result could automatically output.
the device detects ambient light intensity in wide range when it is designed as als only. the als can beconfigured to work in 2 modes, low-light-mode and normal-light-mode. the als in normal-light-mode detection range is 4 times larger than in low-light-mode. to get more precise result of ambientlight, the value of ir register should be deduct from the value of als register.
proximity sensor is designed to tolerant at least 2.0mm air gap. 850nm wavelength ir vcsel diode outputs irlight outwards and reflects to pixel arrays. the proximity sensor detects proximity with large amount of ambient light noise rejected. the range of up to 50k lux of ambient light noise can berejected internally. in order to removing component variations and eliminate offset caused by ir reflection, em30917 set 2 registers for compensation. 2048 steps programmable current driver is more flexible to removecomponent-to-component variation, and also increased dynamic range for ps detection.
both als and ps can work simultaneously. all pixels are controlled by analog-mux in different modes.
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深圳市政鸿微电子有限公司
何建花
18194085326
布龙路339号鸿生源科技园