STK3331 Datasheet | Sensortek

STK3331 Ambient Light Sensor and Proximity Sensor with Built-in IR LED Preliminary Datasheet Version - 0.9.1 Downloaded From Oneyac. STK3331 REV 0.9.1 1. OVERVIEW Description The STK3331 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 featured with interrupt function. For ambient light sensing, the STK3331 incorporates a photodiode, timing controller and ADC in a single chip. The excellent spectral response is designed to be close-to human eye. The STK3331 is suitable for detecting a wide range of light intensity environment. For proximity sensing, the STK3331 also incorporates a photodiode, timing controller and ADC in the same chip. The spectral response of STK3331 is optimized for wavelength 940nm infrared light. The STK3331 provides programmable current setting to drive IR LED and employs a noise cancellation scheme to highly reject unwanted ambient IR noise. The STK3331 has excellent temperature pensation, robust on-chip refresh rate setting without external ponents. Software shutdown mode control is provided for power saving application. The STK3331 operating voltage range is 1.7V to 3.0V. Feature Integrated ambient light sensor, proximity sensor and infrared LED in one package. Proximity Sensor 16 bits resolution for proximity detection Built-in LED driver with flexible setting - LED turn-on time : 7 steps IT - LED current : 3.125 / 6.25/ 12.5 / 25 / 50 / 100 /150 mA Flexible interrupt setting - Several interrupt modes meet application requirements. - Flag modes are included. - Intelligent persistence to speed up the response time :...