STK3235 Datasheet | Sensortek

STK3235 Ambient Light Sensor and Proximity Sensor with I2C interface Datasheet Version - 1.0 STK3235 REV 1.0 1. OVERVIEW Description The STK3235 is an integrated ambient and infrared light to digital converter with 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 STK3235 incorporates a photodiode, timing controller and ADC in a single chip. The excellent spectral response is designed to be close-to human eye. The STK3235 is suitable for detecting a wide range of light intensity environment. For proximity sensing, the STK3235 also incorporates a photodiode, timing controller and ADC in the same chip. The spectral response of STK3235 is optimized for wavelength 940nm infrared light. The STK3235 provides programmable current setting to drive IR LED and employs a noise cancellation scheme to highly reject unwanted ambient IR noise. The STK3235 has excellent temperature pensation, robust on-chip refresh rate setting without external ponents. Software shutdown mode control is provided for power saving application. The STK3235 operating voltage range is 1.7V to 3.0V. Feature - Integrated ambient light sensor and proximity sensor 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 : 1/2/4/16 times - Low noise design - High ambient light...