TMD27553M

TMD2755 ALS + Proximity Sensor Module The TMD2755 features proximity detection and digital ambient General Description light sensing (ALS). The extremely narrow 1.1mm module incorporates an IR VCSEL and factory calibrated VCSEL 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 VCSEL). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS and IR photodiodes have dedicated data converters 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 TMD2755, ALS + Proximity Sensor Module are listed below: Figure 1: Added Value of Using TMD2755 Benefits Features Optimized for narrow bezel mobile phones Small narrow 1.1mm x 3.25mm x 0.60mm module 1.8V power supply with 1.8V IC bus Reduced power consumption Sleep mode (0.7A) VCSEL IR emitter Integrated factory calibrated 940nm IR VCSEL Enabled superior proximity detection Crosstalk and ambient light cancellation Wide configuration range High sensitivity Accurate ambient light sensing 2 channels (photopic ALS + IR) Programmable gain and integration time Industrial design flexibility Offset emitter/detector package design ams Datasheet Page 1 v2-00 2021-Sep-10 Document FeedbackTM D2 75 5 Gen e ra l De s c rip t ion Applications The TMD2755 applications include: Mobile phone display management Mobile phone user proximity detection Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of TMD2755 940nm IR VCSEL Open Drain VDD3 GND Current Sink Lower Upper Proximity Prox ADC Prox Data Prox Thresholds Integration IR Proximity Control SCL 2 I C Interface SDA ALS Control CH0 ADC CH0 Data ALS Thresholds Photopic Lower Upper CH1 ADC CH1 Data IR Interrupt Open INT Drain Output VDD Page 2 ams Datasheet Document Feedback v2-00 2021-Sep-10