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

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