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

TMD26721

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

 

The TMD2672 family of devices provides a complete proximity detection system and digital interface logic in a single 8-pin surface mount module. The device is register-set and pin-compatible with the TMD2671 series and includes new and improved proximity detection features. The proximity detection includes improved signal-to-noise and accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation. Interrupts have been enhanced with the addition of a sleep-on-interrupt feature that also allows for a single cycle operation. The device internal state machine provides the ability to put the device in a low-power mode in between proximity measurements, providing very low average power consumption.

Key Features

  • Integrated proximity detection sensor & IR LED
  • Patented dual-diode architecture
  • Proximity detection calibrated and trimmed to  provide consistent reading
  • 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 - 3.6
I²C Bus VDD
Programmable Interrupt
Integrated Capabilities and Components IR LED
Recommended Operating Distances <15 cm
Temperature Range [°C] -40 to 85
Packages Surface Mount Module, Pin Count 8

Additional Information

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