TSL2541 ALS, Light-to-Digital Sensor The TSL2541 is a very-high sensitivity light-to-digital converter General Description that transforms light intensity into a digital signal output capable of direct IC interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a UV and IR blocking filter whereas the IR channel has a photodiode with an IR pass filter. Each channel has a dedicated data converter producing a 16-bit output. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control a display backlight. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TSL2541, ALS, Light-to-Digital Sensor are listed below: Figure 1: Added Value of Using TSL2541 Benefits Features 2.0mm x 2.0mm x 0.5mm Single device integrated optical solution Power management features IC fast mode interface compatible Photopic ambient light sense (ALS) Accurate ambient light sensing UV / IR blocking filter Programmable gain and integration time Reduced power consumption 1.8V power supply with 1.8V IC bus ams Datasheet Page 1 v1-01 2018-Jan-23 Document FeedbackT S L2 541 Gen e ra l De s c rip t ion Applications The TSL2541 applications include: Ambient light sensing Display backlight control Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of TSL2541 VDD Wait Control SCL ALS Thresholds Lower Upper SDA ALS Control VIS ADC VIS Data VIS Ch Interrupt Out / INT Threshold Status IR ADC IR Data IR Ch PGND TSL2541 VSS Page 2 ams Datasheet Document Feedback v1-01 2018-Jan-23 IC Interface