TMD27253M ams

TMD2725 ALS, and Small Aperture Proximity Sensor Module The device features advanced proximity measurement and General Description digital ambient light sensing (ALS). The package has been designed to accommodate a single small 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 ALS photodiode has UV and IR blocking filters and a dedicated data converter producing 16-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control display backlight. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TMD2725, ALS, and Small Aperture Proximity Sensor Module are listed below: Figure 1: Added Value of Using TMD2725 Benefits Features Small aperture requirements 1.055mm emitter to detector distance ALS + proximity 2mm x 3.65mm x 1mm Single device integrated optical solution Integrated IR LED Power management features IC fast mode interface compatible Photopic Ambient Light Sensor (ALS) Accurate ambient light sensing UV / IR blocking filters Programmable gain and integration time Reduced power consumption 1.8V power supply with 1.8V IC bus ams Datasheet Page 1 v1-13 2018-Feb-23 Document FeedbackTM D2 72 5 Gen e ra l De s c rip t ion Applications The TMD2725 applications include: Ambient light sensing Single hole proximity sensing Mobile phone touch screen disable Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of TMD2725 LEDK/LDR Optically Isolated PGND 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 Lower Upper ALS Control ALS ADC ALS Data Photopic IR ADC IR Data IR Interrupt Out / INT Threshold Status VDD TMD2725 VSS Page 2 ams Datasheet Document Feedback v1-13 2018-Feb-23 IC Interface