STK3331-A Datasheet | Sensortek

OVERVIEW Description The STK3331-A 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-A 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-A is suitable for detecting a wide range of light intensity environment. - High ambient light suppression - 940nm LED for STK3331-A. Ambient Light Sensor - Convert ambient light intensity to 16-bit digital data format - 3rd generation ambient light sensor which closes to human-eye response and suppress IR portion. - Flexible digital settings - Integration time : 7 steps IT - Flexible interrupt setting - Interrupt while out-of- window - Persistence : 1/2/4/8 times - Clear channel for different light source pensation. For proximity sensing, the STK3331-A also incorporates a photodiode, timing controller and ADC in the same chip. The spectral response of STK3331-A is optimized for wavelength 940nm infrared light. The STK3331-A provides programmable current setting to drive IR LED and employs a noise cancellation scheme to highly reject unwanted ambient IR noise. The STK3331-A 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-A operating voltage range is 1.7V to 3.0V. Feature - Integrated ambient light sensor, proximity sensor and infrared LED in one package. General - Fully digital control with I2C interface - 1.7 ~ 3.6V I2C interface - Low power design - Standby mode - Wait mode - VDD wide operation voltage : 1.7~3.0V - Excellent temperature pensation: -40 to 85°C - Available package options: OLGA - STK3331-A :...