ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)
About ams Investor Contact Us Newsroom Join Our Team Samples & Shop

TSL26723

Digital proximity detector, LED drvr., 1.8v I2C interface

 

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.

Key Features

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

Key Benefits

  • 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 Facts

Supply Voltage [V] 2.4 - 3.6
I²C Bus 1.8V
Programmable Gain, Integration Time, Interrupt
Integrated Capabilities and Components
Recommended Operating Distances < 15 cm, < 46 cm
Temperature Range [°C] -30 to 70
Packages FN, Pin Count 6

Additional Information

Applications
  • Touchscreen control
  • Notebook and Monitor Security
  • Industrial process control
  • Printer paper alignment and detection
  • Optical Switch