ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)


Digital proximity detector, LED driver and IR LED in an optical module 1.8v I2C interface


The TMD2671 family of devices provides a complete proximity detection system and digital interface logic in a single 8-pin package. The proximity detector includes a digital proximity sensor with integrated LED driver, and IR LED. The proximity function is calibrated to 100 mm (without cover glass), thus eliminating the need for end-equipment or sub-assembly factory calibration. The proximity detection feature operates from sunlight to dark rooms. The wide dynamic range also allows for operation in short distance detection behind dark glass such as with a cell phone. An internal state machine provides the ability to put the device into a low-power mode providing very low average power consumption. The addition of the micro-optics lenses within the module provide highly efficient transmission and reception of infrared energy, which lowers overall power dissipation for the detection function.


Not Recommended for New Designs!

ams does not recommend using the FN PACKAGE VARIANTS of this product for new designs. Please contact your local sales representative for further information regarding available or planned replacement options.

Key Features

  • Integrated proximity detection sensor & IR LED
  • Patented dual-diode architecture
  • Proximity detection calibrated and trimmed to 100mm detection
  • Programmable LED drive current

Key Benefits

  • Module reduces board space and design effort
  • Enables operation in IR light environments
  • Pre-calibration eliminates need for customer to end-product calibrate
  • Allows multiple power-level selection without external passives

Product Facts

Supply Voltage [V] 2.6 - 2.6
I²C Bus 1.8V
Programmable Interrupt
Integrated Capabilities and Components IR LED
Recommended Operating Distances
Temperature Range [°C] -40 to 85
Packages Surface Mount Module, Pin Count 8

Additional Information

  • Touchscreen control
  • Printer paper alignment and detection
  • Industrial process control
  • Mechanical Switch