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TSL27711 Ambient Light Sensors

Light-to-digital converter with proximity sensing, I2C Vbus = VDD interface

Features

  • Patented dual-diode architecture
  • 1M:1 dynamic range
  • Programmable LED drive current
  • Programmable interrupt function
  • Area efficient 2mm x 2mm Dual Flat no-lead (FN) package

Benefits

  • Enables operation in IR light environments
  • Enables operation in 10 kLux sunlight and accurate sensing behind spectrally distorting materials
  • Allows multiple power level selection without external passives
  • Reduces microprocessor interrupt overhead
  • Reduces board space requirements while simplifying designs

Product parameters

Supply Voltage [V] 2.6 - 3.6
I²C Bus VDD
Programmable Gain, Integration time, Interrupt
Integrated Capabilities ALS, Prox, LED Drvr.
Recommended Operating Distances [cm] < 46
Temperature Range [°C] -40 to 85
Packages FN, pin count 6

General Description

The TSL2771 family of devices provides both ambient light sensing (ALS) and proximity detection (when coupled with an external IR LED). The ALS approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. The proximity detection feature allows a large dynamic range of operation for use in short distance detection behind dark glass such as in a cell phone or for longer distance measurements for applications such as presence detection for monitors or laptops. The programmable proximity detection enables continuous measurements across the entire range. In addition, an internal state machine provides the ability to put the device into a low power mode in between ALS and proximity measurements providing very low average power consumption.

This product suits for the following applications:

  • Display backlight control
  • Touchscreen control
  • Medical diagnostics
  • Industrial process control
  • Printer paper alignment and detection

Tools

Title Category Headline Buy
TSL2771EvalKit Application Board Evaluation Kit for TSL2771

Resources

Name Type Description Language
TSL2771_AD000119_2-00.zip Application Data RefBoard English

Technical Documents

Name Type Description Version Language
TSL2771_BD000165_1-00.png Block Diagram TSL2771 Block Diagram 1-00 English
TSL2771_DS000105_3-00.pdf Datasheet Document version 1-00 3-00 English
TSL277x_AN000532_1-00.pdf Application Note Using Interrupts and the Persistence Filter (DN 41) 1-00 English

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