ams OSRAM TMD3725 3-in-1 Color Sensor Module

ams OSRAM TMD3725 3-in-1 Color Sensor Module offers advanced proximity measurement, color sense (RGBC+IR), and digital ambient light sensing (ALS) in a single compact package. The TMD3725 module incorporates an IR LED and factory-calibrated LED driver. The proximity detection feature provides object detection via photodiode detection of reflected IR energy, sourced by the integrated LED. Detect/release events are interrupt-driven, and occur when the proximity result crosses the upper/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. 

The ALS detection feature provides photopic light intensity data. The color photodiodes have UV and IR blocking filters and dedicated integrated data converters, which convert photodiode currents into 16-bit data. This digital output can be interfaced with a microprocessor where illuminance and color temperature can be calculated to control a display's backlight and chromaticity.

The ams OSRAM TMD3725 Color Sensor Module is offered in a tiny 2.2mm x 3.6mm Organic Land Grid Array (OLGA) package, ideal for space-constrained applications.


  • Color light sensor, proximity sensor, and ambient light sensing
  • Single glass aperture solution with 1.0mm spacing between the proximity IR LED and the sensor
  • Provides <10% CCT accuracy
  • Design flexibility for dark glass and placement
  • Low power consumption
  • Enables dark room to sunlight operation
  • Photopic ambient light sensing (ALS)
  • Active, idle, and sleep state power management
  • Compensates for unwanted IR energy system crosstalk reflection
  • Compensates for unwanted ambient light photodiode current
  • RGB + UV/IR filters
  • High sensitivity down to mLux levels
  • 0.18µm process technology and 1.8V power supply with 1.8V I2C
  • 1M:1 dynamic range
  • Programmable proximity offset adjustment, gain, and integration time
  • Proximity automatic ambient light subtraction
  • Moisture Sensitivity Level (MSL) 3
  • Reduced board space requirements and enables low-profile system design


  • Display backlight control
  • Color temperature sensing to assist backlight, camera, and flash control
  • Ambient light sensing
  • Single hole proximity sensing


  • 1.7V to 2.0V supply voltage range
  • 1.8V I2C bus
  • Programmable gain, integration time, and interrupt
  • 46° average field of view (FOV)
  • -30°C to +85°C temperature Range
  • Single glass aperture
  • Modular OLGA-8 package type
  • 2.0mm x 3.65mm x 1.0mm in dimension
  • RoHS compliant

Block Diagram

Block Diagram - ams OSRAM TMD3725 3-in-1 Color Sensor Module

Typical Application CIrcuit

Application Circuit Diagram - ams OSRAM TMD3725 3-in-1 Color Sensor Module

Pin Designations

Mechanical Drawing - ams OSRAM TMD3725 3-in-1 Color Sensor Module

Package Outline

Mechanical Drawing - ams OSRAM TMD3725 3-in-1 Color Sensor Module
Published: 2019-06-20 | Updated: 2023-06-27