深圳市政鸿微电子有限公司专业代理各品牌的传感器,闪光灯,型号齐全,有质量保障
EM30918 series is a low-powerI2C interface 5in1 module includesAmbientLight Sensor (ALS), Long-Distance Proximity Sensor (PS), IR Sensors, and internal Current Drivers with IR VCSEL Diode. It is designed for applications such as smart phone and tablets with capacitive touch panel.
EM30918 is application specific for custom-made products and no need of a controller to initializeandcontrol. The gain and threshold values could be custom-made and detection resultcouldautomatically output.
The device detects ambient light intensityinwide range when it is designed as ALS only. The ALS can be configured to work in 2 modes, low-light-mode and normal-light-mode. The ALS in normal-light-mode detection range is 4 times larger thaninlow-light-mode. To get more precise result of ambient light, the value of IR register should be deduct from the value of ALS register.
Proximity Sensor is designed to tolerantatleast 2.0mm air gap. 850nm wavelength IR VCSEL Diode outputs IR light outwards and reflects to pixel arrays. The proximity sensor detects proximity with large amount of ambient light noiserejected.The range of up to 50K lux of ambient light noise can be rejected internally. In order to removing component variations and eliminate offset caused by IR reflection, EM30917 set 2registersfor compensation. 2048 steps programmable current driver is more flexible toremovecomponent-to-component variation, and also increased dynamic range for PS detection.
Both ALS and PScanwork simultaneously. All pixels are controlled by analog-MUX in different modes.
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