TMD3782 Color Light-to-Digital Converter with Proximity Sensing The TMD3782x device will perform color temperature General Description measurement, ambient light sensing (ALS) and proximity detection with background light rejection. The device detects light intensity under a variety of lighting conditions and through a variety of attenuation materials, including dark glass. The proximity detection feature allows a large dynamic range of operation for accurate distance detection, such as in a cell phone when the user positions the phone close to their ear. IR LED sink current is factory trimmed to provide consistent proximity response without requiring customer calibrations. An internal state machine provides the ability to put the device into a low power state between proximity and RGBC measurements providing very low average power consumption. The color sensing feature is useful in applications such as backlight control, solid state lighting, reflected LED color sampler, or fluorescent light color temperature detection. The integrated IR blocking filter makes this device an excellent ambient light sensor, color temperature monitor, and general purpose color sensor. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TMD3782, Color Light-to-Digital Converter with Proximity Sensing are listed below: Figure 1: Added Value of Using TMD3782 Benefit Feature RGB, Ambient Light Sensor (ALS) and Proximity Support Power Management Features Single Device Integrated Optical IC Fast Mode Interface Compatible Solution Integral IR LED Small 8 lead optical module UV / IR blocking filters Color Temperature and Ambient Light Programmable Gain & Integration Time Sensing 1,000,000:1 Dynamic Range Equal Response to 360 Incident Light Circular Segmented RGBC Photodiode Ideal for Operation Behind Dark Glass Very High Sensitivity ams Datasheet Page 1 v3-02 2015-Sep-11 Document FeedbackT M D3 782 Gen e ra l De s c rip t ion Benefit Feature Background Ambient Light Rejection Proximity Detection with Integrated IR Factory Trimmed, Consistent Response LED Programmable Current Sink for IR LED Drive Applications The TMD3782 applications include: Ambient Light Sensing Color Temperature Sensing Cell Phone Touch Screen Disable Mechanical Switch Replacement Industrial Process Control Medical Diagnostics Block Diagram The functional blocks of this device are shown below: Figure 2: TMD3782 Block Diagram Page 2 ams Datasheet Document Feedback v3-02 2015-Sep-11