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TSL25711 Ambient Light Sensor

Light-to-digital converter with Vdd I2C interface


  • Patented dual-diode architecture
  • 1M:1 dynamic range
  • I2C digital interface
  • 2.5µA quiescent current
  • Available in 2mm x 2mm Dual Flat no-lead (FN) packages


  • Enables operation in IR light environments
  • Enables dark room to high lux sunlight operation
  • Digital interface is less susceptible to noise
  • Enables low standby power consumption
  • Reduces board space requirements while simplifying designs

Product parameters

Supply Voltage [V] 2.6 - 3.6
Interface I2C - VDD
Programmable Gain, integration time, interrupt
Max. Lux 10000
Temperature Range [°C] -30 to 70
Packages FN (6-Pin)
Remark Not recommended for new designs. Please see TSL2572x device family.

General Description

The TSL2571 family of devices provides ambient light sensing (ALS) that approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. While useful for general purpose light sensing, the device is particularly useful for display management with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions. Display panel and keyboard backlighting can account for up to 30 to 40 percent of total platform power. The ALS features are ideal for use in notebook PCs, LCD monitors, flat-panel televisions, and cell phones.

This product suits for the following applications:

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


Title Category Headline Buy
TSL2571EvalKit Application Board Evaluation Kit for TSL2571


Name Type Description Language Application Data RefBoard English

Technical Documents

Name Type Description Version Language
AmbientLightSensors_AN000530_1-00.pdf Application Note TSL258x: Accurate ADC Readings after Enable (DN42) 1-00 English
AmbientLightSensors_AN000104_1-00.pdf Application Note Optical Window Design (DN13B) 1-00 English
AmbientLightSensors_AN000173_2-00.pdf Application Note Custom Lux Equation (DN28) 2-00 English
AmbientLightSensors_AN000172_2-00.pdf Application Note Ambient Light Sensing (DN26) 2-00 English
AmbientLightSensors_AN000171_2-00.pdf Application Note Auto-gain Algorithm (DN39) 2-00 English
AmbientLightSensors_AN000170_2-00.pdf Application Note Using the Lux Equation (DN29A) 2-00 English
AmbientLightSensors_AN000169_2-00.pdf Application Note Sensitivity to Temperature (DN24) 2-00 English
AmbientLightSensors_AN000168_2-00.pdf Application Note Sensitivity to Wavelength (DN23) 2-00 English
AmbientLightSensors_AN000167_2-00.pdf Application Note Radiometric and Photometric Measurements (DN21) 2-00 English
AmbientLightSensors_AN000268_1-00.pdf Application Note Improving Color Sensor Lux Accuracy 1-00 English
LightSensors_AN000519_1-00.pdf Application Note Colorimetry Tutorial (DN 20) 1-00 English
TSL2571_BD000155_1-00.png Block Diagram TSL2571 Block Diagram 1-00 English
TSL2571_DS000114_3-00.pdf Datasheet Document version 1-01 3-00 English
TSL2571_PD000349_1-00.png Other Product Document TSL2571EvalKit Image 1-00 English

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