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TSL25911 Ambient Light Sensor

Light-to-digital converter with Vdd I2C interface

Features

  • Highest sensitivity to 188µLux
  • Patented dual-diode architecture
  • 600M:1 dynamic range
  • Programmable interrupt function
  • UV-rejection package
  • Area efficient 2mm x 2.4mm Dual Flat no-lead (FN) package

Benefits

  • Design flexibility for dark glass and placement
  • Enables operation in IR light environments
  • Enables dark room to sunlight operation
  • Reduces microprocessor interrupt overhead
  • Improves lux accuracy across various light sources

Product parameters

Supply Voltage [V] 2.7 - 3.6
Interface I2C - VDD
Programmable Gain, integration time, interrupt
Max. Lux 88000
Temperature Range [°C] -30 to 70
Packages FN (6-Pin)
Remark Industry leading dynamic range which drives both ultra low light sensitivity and bright sunlight operation

General Description

The TSL2591 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. The TSL2591 supports a traditional level style interrupt that remains asserted until the firmware clears it.

This product suits for the following applications:

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

Tools

Title Category Headline Buy
TSL2591EvalKit Application Board Evaluation Kit for TSL2591

Technical Documents

Type Description Language
Datasheet Document version 2-04 English
Application Note TSL258x: Accurate ADC Readings after Enable (DN42) English
Application Note Colorimetry Tutorial (DN 20) English
Application Note Improving Color Sensor Lux Accuracy English
Application Note Custom Lux Equation (DN28) English
Application Note Using the Lux Equation (DN29A) English
Application Note Auto-gain Algorithm (DN39) English
Application Note Ambient Light Sensing (DN26) English
Application Note Radiometric and Photometric Measurements (DN21) English
Application Note Sensitivity to Wavelength (DN23) English
Application Note Sensitivity to Temperature (DN24) English
Application Note Optical Window Design (DN13B) English

Environmental Documents

Type Description Language
Material Declaration Form MDF_300150002_TSL25911FN English

Other Information

Type Description Language
Block Diagram TSL2591 Block Diagram English
Factsheet Ambient Light Sensors English
Other Product Document TSL2591EvalKit Image English
Other Product Document TSL2584TSVEvalKit Image English

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