ams OSRAM TSL2591 Ambient Light Sensor

ams OSRAM TSL2591 Ambient Light Sensor is a very high sensitivity light-to-digital converter that transforms light intensity into a digital signal output capable of direct I2C interface. The device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit. Two integrating ADCs convert the photodiode currents into a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. ams OSRAM TSL2591 Ambient Light Sensor supports a traditional level style interrupt that remains asserted until the firmware clears it.


  • Dual diode
  • Programmable analog gain and integration time
  • 600M:1 dynamic range
  • Two internal interrupt sources
  • Programmable upper and lower thresholds
  • One interrupt includes a programmable persistence filter
  • Low power 3.0µA sleep state
  • User-selectable sleep mode
  • I2C fast mode compatible interface
  • Data rates up to 400kbit/s
  • Input voltage levels compatible with 3.0V bus


  • Display backlight control
  • Keyboard illumination control
  • Solid state and general lighting control
  • Printer paper detection


Block Diagram

ams OSRAM TSL2591 Ambient Light Sensor


Zveřejněno: 2013-07-09 | Aktualizováno: 2023-04-24