Ambient light sensor TSL277 series

programmable

Light-to-digital converter with proximity sensing, I2C Vbus = VDD interface Features - Patented dual-diode architecture - 1M:1 dynamic range - Programmable LED drive current - Programmable interrupt function - Area efficient 2mm x 2mm Dual Flat no-lead (FN) package Benefits - Enables operation in IR light environments - Enables operation in 10 kLux sunlight and accurate sensing behind spectrally distorting materials - Allows multiple power level selection without external passives - Reduces microprocessor interrupt overhead - Reduces board space requirements while simplifying designs Product parameters Supply Voltage [V]: 2.6 - 3.6 I²C Bus: VDD Programmable: Gain, Integration time, Interrupt Integrated Capabilities: ALS, Prox, LED Drvr. Recommended Operating Distances [cm]: < 46 Temperature Range [°C]: -40 to 85 Packages: FN, pin count 6 General Description The TSL2771 family of devices provides both ambient light sensing (ALS) and proximity detection (when coupled with an external IR LED). The ALS approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. The proximity detection feature allows a large dynamic range of operation for use in short distance detection behind dark glass such as in a cell phone or for longer distance measurements for applications such as presence detection for monitors or laptops. The programmable proximity detection enables continuous measurements across the entire range.