Ambient light sensor TSL2541 series

visiblephotodiodedigital

Light-to-Digital Converter with I²C interface Features - Dark Mold Compound package - Integrated on-chip photopic filter - High Sensitivity down to mLux levels - 0.18µm process technology with 1.8V I2C - 1M:1 dynamic range - Automatic AUTO Zero/Dark Count control Benefits - Enables concealment behind inked glass - Provides near photopic responsiveness - Design flexibility for dark glass & placement - Reduces power consumption - Enables dark room to sunlight operation - Eliminates system electrical background noise Product parameters Supply Voltage [V]: 1.7 - 2.0 Interface: I²C - 1.8V Programmable Max. Lux: 60000 Temperature Range [°C]: -30 to 85 Packages: QFN, Pin Count 10 General Description The TSL2541 is a very-high sensitivity light-to-digital converter that has a dark mold compound package which enables concealment behind inked glass. It approximates the human eye response to light intensity under varying lighting conditions and transforms this light intensity to a digital signal output capable through a 1.8V I²C interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a photopic Interferometric UV and IR blocking filter and the IR channel has a photodiode with an IR pass filter. Each channel has a dedicated integrating data converter which converts photodiode current into a 16-bit digital output. This digital output can be interfaced with a microprocessor where illuminance in lux is derived to accurately measure ambient light to control a displays backlight.