Description The STK33C61 is an integrated ambient and infrared light to digital converter with a built-in IR LED and I 2C 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 STK33C61 incorporates a photodiode, timing controller and ADC in a single chip. The excellent spectral response is designed to be close-to human eye. The STK33C61 is suitable for detecting a wide range of light intensity environment. For proximity sensing, the STK33C61 also incorporates a photodiode, timing controller and ADC in the same chip. The spectral response of STK33C61 is optimized for wavelength 940nm infrared light. The STK33C61 provides programmable current setting to drive IR LED and employs a noise cancellation scheme to highly reject unwanted ambient IR noise. The STK33C61 has excellent temperature compensation, robust on-chip refresh rate setting without external components. Software shutdown mode control is provided for power saving application. The STK33C61 operating voltage range is 1.7V to 1.98V.

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: 8 steps IT ⚫ Flexible interrupt setting – Interrupt while out-of- window – Persistence: 1 / 2 / 4 / 8 times ⚫ Clear channel for different light source compensation.

General ⚫ Fully digital control with I2C interface – 1.2~3.6V I2C interface ⚫ Low power design – Standby mode – Wait mode ⚫ VDD wide operation voltage: 1.7~1.98V ⚫ Excellent temperature compensation: -40 to 85°C ⚫ Available package options: OLGA – STK33C61: 4.2 x 1.5 x 1 (mm) ⚫ Lead-free package (RoHS compliant) ⚫ Moisture Sensitivity Level 3 Applications ⚫ Mobile Phone, Smart-phone, PDA