TMD26353M

TMD2635 Miniature Proximity Sensor Module The TMD2635 features advanced proximity measurement in a General Description tiny (1.0mm x 2.0mm) and thin (0.5mm) optical land grid array module that incorporates a 940nm IR VCSEL and is factory calibrated for IR proximity response. The proximity detection feature provides object detection (e.g. close proximity) by photodiode detection of reflected IR energy sourced by the integrated VCSEL emitter. Detect/release events can be 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. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of TMD2635 Proximity Sensor Module are listed below: Figure 1: Added Value of Using TMD2635 Benefits Features Optimized for small wearable devices Tiny 1.0mm x 2.0mm x 0.5mm module 1.8V power supply with 1.8V IC bus Reduced power consumption Sleep mode (0.7A) with fast wakeup VCSEL IR emitter Integrated factory calibrated 940nm IR VCSEL Enables superior proximity detection Crosstalk and ambient light cancellation Wide configuration range Dual photodiode architecture Industrial design flexibility Offset emitter/detector package design ams Datasheet Page 1 v1-03 2020-Aug-25 Document FeedbackT M D2 635 Gen e ra l De s c rip t ion Applications The TMD2635 applications for wearable products such as true-wireless stereo earbuds, glasses, and watches include: Power control (automatic power up/down based on user insertion/removal) Volume/mode control user detection (up/down/mute based on user touch/tap) Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of TMD2635 VDD Open Drain VDD3 GND Current Sink 940nm IR VCSEL IR Filter Lower Upper Proximity Near Prox ADC Prox Data Prox Thresholds Integration Photo- diode Proximity Control Interrupt Open INT Drain Output Far Photo- 2 SCL I C diode Wait Control Interface SDA Page 2 ams Datasheet Document Feedback v1-03 2020-Aug-25 Analog Mux