TSL2540 Datasheet | ams

Description The TSL2540 is a very-high sensitivity light-to-digital converter that transforms light intensity into a digital signal output capable of direct I²C 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. Figure 1: Added Value of Using TSL2540 Key Benefits & Features The benefits and features of TSL2540 ALS, Light-to-Digital Sensor are listed below: Benefits - Single device integrated optical solution - Accurate ambient light sensing - Reduced power consumption Features - 2.0mm x 2.0mm x 0.5mm - Power management features - I²C fast mode interface patible - Photopic ambient light sense (ALS) - UV / IR blocking filter - Programmable gain and integration time - 1.8V power supply with 1.8V I²C bus Datasheet, Public [v2-00] 2022-Dec-05 Page 1 Document Feedback Figure 2: Functional Blocks of TSL2540 - General Description Applications The TSL2540 applications include: - Ambient light sensing - Display backlight control Block Diagram The functional blocks of this device are shown below: Wait Control ALS Control ALS Thresholds Lower Upper VIS Ch IR Ch VIS ADC IR ADC VIS Data IR Data Interrupt Out / Threshold Status I²C Interface VDD SCL SDA INT PGND VSS Page 2 Document Feedback Datasheet, Public [v2-00]...