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TMD2636 IR Proximity Detection Module

2-in-1 low-profile proximity detection module 1.8V I²C


  • Low-profile (0.35mm) and ultra-small (0.7mm³) 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 2.0 mm x 1.0 mm x 0.35 mm package


  • 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 1mmx2mm Oval)
  • Reduces overall system power consumption
  • Reduces board space requirements and enables low-profile system design

Product parameters

Supply Voltage [V] 1.7 -2.0
I²C Bus [V] 1.8
Programmable Gain, Pulse width, Number of pulses, VCSEL current, 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 TMD2636 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 (0.35mm) 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
  • Single hole proximity sensing


Title Category Headline Buy
TMD2636 Eval Kit Application Board Evaluation Kit for TMD2636

Technical documents

Type Description Language
Datasheet TMD2636 Miniature Proximity Sensor Module datasheet English
Application Note Low power proximity detection 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

Other information

Type Description Language
Block Diagram TMD2636 Block Diagram
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