TMD2635 IR Proximity Detection Module
2-in-1 ultra small proximity detection module 1.8V I²C
Features
- Ultra-Small (1.0mm3) volumetric size
- Proximity crosstalk compensation
- 940nm IR proximity with automatic ambient light subtraction
- Automatic single alternative I²C address option
- Split near/far photodiodes and offset emitter/detector placement
- 0.18µm process technology with 1.8V I²C
- Small footprint and low profile 2.0mm x 1.0mm x 0.5 mm package
Benefits
- Ideal for the smallest size applications
- Enables accurate and stable measurements behind highly diffusive and spectrally distorting materials in low light level environments
- Compensates for unwanted ambient light photodiode current
- Enables an additional device to reside on I²C bus with 0x38
- Enhances industrial design flexibility of sensor apertures sizes and shapes (1.5mm circular or 1x2mm oval)
- Reduces overall system power consumption
- Reduce board space requirements and enable low-profile system design
Product parameters
| Supply Voltage [V] | 1.7 - 2.0 |
|---|---|
| I²C Bus | 1.8V |
| Programmable | Gain, Integration Time, Interrupt |
| Integrated Capabilities and Components | IR VCSEL |
| Recommended Operating Distances [cm] | <5 |
| Temperature Range [°C] | -30 to 85 |
| Package | OLGA, Pin Count 6 |
General description
The TMD2635 is an advanced IR proximity sensor module suited for short range proximity measurement detection and offered in the industry's smallest size (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 nearby object detection by photodiode detection of reflected IR energy sourced by the integrated VCSEL emitter. Sensitivity, power consumption, and noise can be optimized with adjustable timing and power. Detect/release events can be interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features advanced crosstalk noise cancellation through a wide range offset adjustments to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction.
This product suits for the following applications:
- True-Wireless Stereo Ear Buds
- Display Backlight Control
- Optical Switch
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| TMD2635 Evaluation Kit | Application Board | Evaluation Kit for TMD2635 |
Technical documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Datasheet | TMD2635 Datasheet v2-00 | English | ||
| Application Note | Low power proximity detection | English | ||
| Application Note | Using Interrupts and the Persistence Filter (DN 41) | English | ||
| Application Note | TSL2771 I2C Communications & Proximity Algorithm (DN30A) | English | ||
| Application Note | Proximity Detection and Link Budget (DN38) | English | ||
| Application Note | Proximity Detection and IR Ink (DN 35) | English | ||
| Application Note | Proximity Calibration and Test (DN 37) | English | ||
| Application Note | Proximity Detection Layout Recommendations (DN32A) | English | ||
| Application Note | Proximity Detection IR LED and Optical Crosstalk (DN 34) | English | ||
| Application Note | Signal, Noise, Offset and Proximity Sensors (DN33) | English | ||
| Application Note | Signal, Noise, Offset - TSL2771 (DN33.1 Appendix) | English | ||
| Application Note | Signal, Noise, Crosstalk - TCS3771 (DN33.2 Appendix) | English | ||
| Application Note | Optimizing Proximity Parameters | English | ||
| Application Note | Proximity Calibration Using POFFSET | English | ||
| Application Note | Proximity Factory Calibration | English | ||
| Application Note | Basic Pre-Production Light & Color Sensor Solution Validation Process | English | ||
| Quick Start Guide | TMD2635 EVM | English | ||
| User Guide | TMD2635 EVM User Guide | English |
Environmental documents
| Type | Description | Language | ||
|---|---|---|---|---|
| RoHS Certificate | RoHS Certificate_TMD2635 | English |
Notifications
| Type | Description | Language | ||
|---|---|---|---|---|
| Product Change Notification | CN16-2020 (VCSEL supplier change) | English |
Related boards
Evaluation Kit for TMD2635
TMD2635 Evaluation Kit
The TMD2635 Evaluation Kit comes with everything needed to evaluate the TMD2635 proximity sensor module. The evaluation kit comprises of a main controller board with a PIC microcontroller, an industry standard USB 2.0 interface (with an USB cable), a TMD2635 module daughter card, "plug-n-play" USB HID class drivers, software documentation, and GUI software allowing users to control the proximity sensor settings as the PIC takes the TMD2635 I²C digital outputs to calculate proximity.
Related products
TMD2620 Proximity Detection Module
TMD2620
The device is an advanced proximity sensor. 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 user’s 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.