TMD3725 ALS, Color and Proximity Sensor Module The device features advanced proximity measurement, color General Description sense (RGBC+IR), and digital ambient light sensing (ALS). The package has been designed to accommodate a single hole aperture approach. The slim module incorporates an IR LED and factory calibrated LED driver. The proximity detection feature provides object detection (e.g. mobile device screen to users ear) by photodiode detection of reflected IR energy (sourced by the integrated LED). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features offset adjustment registers to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS detection feature provides photopic light intensity data. The color photodiodes have UV and IR blocking filters and a dedicated data converters producing 16-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance and color temperature to control display backlight and chromaticity. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TMD3725, ALS, Color and Proximity Sensor Module are listed below: Figure 1: Added Value of Using TMD3725 Benefits Features Single glass aperture solution 1.0mm spacing between proximity IR LED and sensor Reduced board space requirements and Small footprint and low-profile package enables low-profile system design (3.65 mm x 2.00 mm x 1.00 mm) UV / IR blocking filters 460 Average FOV Accurate color temperature and ambient light sensing Photopic ambient light sensing (ALS) Programmable gain and integration time Color (RGB), Ambient Light and Proximity Sensing Compact integrated optical module with integrated IR LED Power management features (active, idle and sleep states) Reduced power consumption 1.8V power supply with 1.8V IC bus ams Datasheet Page 1 v1-05 2018-Mar-08 Document FeedbackT M D3 725 Gen e ra l De s c rip t ion Applications The TMD3725 applications include: Ambient light sensing Single hole proximity sensing Mobile phone touch screen disable Color temperature sensing to assist backlight, camera, and flash control Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of TMD3725 LEDK/LDR Optically PGND Isolated Proximity LED IR Current Sink LED Prox ADC Prox Data LEDA SCL Prox Control Lower Upper Prox Thresholds Prox Integration Wait Control SDA ALS Thresholds IR - Ch 4 Lower Upper ALS Control CH0 ADC CH0 Data Clear - Ch 0 CH1 ADC CH1 Data Red - Ch 1 Interrupt Out / INT Threshold Status CH2 ADC CH2 Data Green - Ch 2 CH3 ADC CH3 Data VDD Blue - Ch 3 TMD37253S GND Page 2 ams Datasheet Document Feedback v1-05 2018-Mar-08 IC Interface