STK3420 数据手册 规格书下载
The STK3420 is an integrated ambient and infrared light to digital converter with a built-in IR LED and I2C interface. This device provides not only ambient light sensing to allow robust backlight/display brightness control but also infrared sensing to allow proximity estimation and gesture recognition featured with interrupt function.
For ambient light sensing, the STK3420 incorporates a photodiode, timing controller and ADC in a single chip.
For proximity sensing, the STK3420 also incorporates a photodiode, timing controller and ADC in the same chip. The spectral response of STK3420 is optimized for wavelength 940nm infrared light. The STK3420 provides a noise cancellation scheme to highly reject unwanted ambient IR noise.
For gesture recognition, the STK3420 provides multi-photodiodes to distinguish the movement of the object. It can be used to recognize 3D dimensions gesture recognition: left / right / up / down / near / far.
The STK3420 operating voltage range is 2.4V to 3.6V.
