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TMD2755 ALS and Proximity Sensor

Extremely narrow 1.1mm ambient light sensor and proximity detection module


  • Small narrow 1.1mm x 3.25mm x 0.60mm module
  • 1.8V power supply with 1.8V I²C bus
  • Crosstalk and ambient light cancellation
  • 2 channels (photopic ALS + IR) with programmable gain and integration time
  • Offset emitter/detector package design


  • Optimized for narrow bezel mobile phones
  • Reduced power consumption
  • Enabled superior proximity detection
  • Accurate ambient light sensing
  • Industrial design flexibility

Product parameters

Supply Voltage [V] 1.7 - 1.98
I²C Bus 1.8V
Programmable Gain, Integration time, Interrupt
Integrated Capabilities VCSEL
Recommended Operating Distances [cm] <15
Temperature Range [°C] -30 to 85
Package OLGA, pin count 6

General description

The TMD2755 features proximity detection and digital ambient 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 user’s 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.

This product suits for the following applications:

  • Mobile phone display management
  • Mobile phone user proximity detection


Title Category Headline Buy
Evaluation Kit for TMD2755 Application Board Evaluation Kit for TMD2755


Type Description Language
Evaluation Software EN
Driver EN
Driver EN

Technical documents

Type Description Language
Datasheet TMD2755 Datasheet v6-00 English
Application Note This application note discusses the challenges associated with narrow channel, large air gap designs using the TMD2755 English
Application Note TMD2755 Temperature Sensor Function English
Application Note Basic Pre-Production Light & Color Sensor Solution Validation Process English
Product Brief TMD2755 Product Brief English

Environmental documents

Type Description Language
RoHS Certificate TMD2755 RoHS Certificate English

Other information

Type Description Language
Block Diagram Block diagram TMD2755 English
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