Azoteq IQS227D Capacitive Proximity & Touch Controller

Azoteq IQS227D Capacitive Proximity & Touch Controller


Azoteq IQS227D Single-Channel Capacitive Proximity and Touch Controllers are fully integrated self-capacitive sensors with dual outputs (touch and proximity outputs). Azoteq IQS227D is sub-5μA in low-power mode while sensing proximity and offers advanced on-chip digital signal processing. These sensors serve a wide variety of applications, including LCD/plasma/LED TVs, GSM cellular phones, LED flashlights, office equipment, and more.


  • Sub-5μA in low-power mode while sensing proximity
  • Automatic tuning implementation (ATI) – automatic tuning of sense electrode
  • Internal capacitor implementation (ICI) – reference capacitor on-chip
  • 2.4V to 5.5V supply voltage
  • Minimal external components
  • Advanced on-chip digital signal processing
  • User-selectable (OTP) – four power modes
    • I/O sink/source
    • Time-out for stuck key
    • Output mode (direct/latch/toggle)
    • Proximity and touch button sensitivity
  • RoHS2 compliant

more information:

About mixos

Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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