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TSL2520 - Ambient Light Sensor

Highly sensitive ambient light sensor


  • 1mlux detectable illuminance
  • UV/IR blocking filter for clear channel
  • ALS interrupt with thresholds
  • Flicker-immune ALS sensing with programmable integration time
  • Configurable sleep mode
  • Interrupt-driven device
  • Digital and analog saturation flags


  • Invisible ALS sensing under any glass type
  • Unique fast ALS integration mode
  • Low power consumption and minimum I²C traffic
  • Integrated status checking for all functions

Product parameters

Supply Voltage [V] 1.7 -1.98
Interface I²C - 1.8V
Programmable Gain, integration time, interrupt, configuration
Max. Lux [lux]
Temperature Range [°C] -30 to 85
Package OLGA, Pin coun 6

General description

The TSL2520 features ambient light sensing and comes in a low-profile and small footprint, L2.0mm x W1.0mm x H0.5mm optical QFN package. The Ambient Light Sensing function provides two concurrent ambient light sensing channels, which can be arbitrarily connected to the photodiodes via a programmable multiplexer. TSL2520 incorporates a set of infrared photodiodes and a set of clear photodiodes. The clear photodiode area is covered with a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of irradiance of different light sources. Calculation results help to improve display appearance and picture taking.

This product suits for the following applications:

  • Indoor/outdoor brightness information
  • Brightness management for displays
  • Camera image correction assistance


Title Category Headline Buy
TSL2520 Eval Kit Application Board Evaluation Kit for TSL2520

Technical documents

Type Description Language
Datasheet TSL2520 datasheet English
Application Note Basic Pre-Production Light & Color Sensor Solution Validation Process English
Special Datasheet TSL2520 short datasheet English

Other information

Type Description Language
Block Diagram TS2520 Block Diagram
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