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Digital proximity detector, LED drvr., Vdd I2C interface


  • Patented dual-diode architecture
  • Programmable proximity offset adjustment
  • Proximity saturation indicator bit
  • Programmable LED drive current


  • Enables operation in IR light environments
  • Eliminates IR LED system cross talk
  • Prevents false proximity detection in bright light
  • Allows multiple power level selection without external passives

Product parameters

Supply Voltage [V] 2.4 - 3.6
Programmable Gain, Integration time, Interrupt
Integrated Capabilities and Components
Recommended Operating Distances [cm] < 15, < 46
Temperature Range [°C] -30 to 70
Packages FN, pin count 6

General Description

The TSL2672 family of devices provides proximity detection when coupled with an external IR LED. The devices incorporate a constant-current LED sink driver to pulse the external IR LED and achieve very low average power consumption using the low power wait state with programmable wait time between proximity measurements. In addition, the devices are register-set and pin-compatible with the TSL2671 series and include a number of new and improved features, such as improved signal-to-noise and measurement accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false measurements, a proximity saturation bit indicates that the internal analog circuitry saturated. Interrupts have been enhanced with the addition of a sleep-after-interrupt feature that also allows for single-cycle operation.

This product suits for the following applications:

  • Touchscreen control
  • Notebook and monitor security
  • Industrial process control
  • Printer paper alignment and detection
  • Optical switch


Title Category Headline Buy
TSL2672EvalKit Application Board Evaluation Kit for TSL2672


Name Type Description Language Application Data Refboard English Application Data RefBoard French Application Data RefBoard English Application Data RefBoard English

Technical Documents

Name Type Description Version Language
ProxDetect_AN000527_1-00.pdf Application Note Signal, Noise, Crosstalk - TCS3771 (DN33.2 Appendix) 1-00 English
ProxDetect_AN000528_1-00.pdf Application Note Signal, Noise, Offset - TSL2771 (DN33.1 Appendix) 1-00 English
ProxDetect_AN000529_1-00.pdf Application Note Signal, Noise, Offset and Proximity Sensors (DN33) 1-00 English
LightSensors_AN000519_1-00.pdf Application Note Colorimetry Tutorial (DN 20) 1-00 English
TSL2672_BD000200_1-00.png Block Diagram TSL2672 Block Diagram 1-00 English
TSL2672_DS000180_2-00.pdf Datasheet Document version 1-00 2-00 English
TSL2672_FS000107_1-00.pdf Factsheet Proximity Detection Sensors 1-00 English
TMD27723_TSL26721_PN000143_1-00.pdf Product Change Notification CN15-2016 (TSL26721, TMD27723) 1-00 English

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