ams OSRAM TSL2740 ALS & Proximity Light-to-Digital Sensor

ams OSRAM TSL2740 ALS and Proximity Light-to-Digital Sensor features advanced proximity measurement and digital ambient light sensing (ALS). The proximity detection feature provides object detection via photodiode detection of reflected IR energy. Detect/release events are interrupt-driven and occur when proximity results cross upper and/or lower threshold settings. The proximity engine features offset adjustment registers to compensate for unwanted IR energy reflection at the sensor.


  • Single device integrated optical solution
    • 2.0mm x 2.0mm x 0.5mm package
    • Power management features
    • I2C fast mode interface compatible
  • Accurate ambient light sensing
    • Photopic ambient light sensor (ALS)
    • UV / IR blocking filter
    • Programmable gain and integration time
  • Reduced power consumption, 1.8V power supply with 1.8V I2C bus
  • Compensates for unwanted:
    • IR system crosstalk reflection with a programmable proximity offset adjustment register
    • Ambient light photodiode current with proximity automatic ambient light subtraction


  • Home assistants
  • Smartwatch wearables
  • Display backlight control
  • Ambient light sensing
  • Tablets
  • Smartphones
  • Medical diagnostics


  • 2mm2 x 0.5mm in dimension
  • Surface mount
  • 1.8V operating supply voltage
  • -30°C to +85°C operating temperature range

Block Diagram

Block Diagram - ams OSRAM TSL2740 ALS & Proximity Light-to-Digital Sensor
Publicado: 2019-03-29 | Actualizado: 2023-06-23