The IQS227A is a single channel capacitive sensor device for applications that require both proximity and touch detection.



  • Automatic Antenna Tuning Implementation (ATI)
  • Internal Capacitor Implementation (ICI)
  • Supply voltage: 1.8V to 3.6V
  • Minimal external components
  • Data streaming option
  • Advanced on-chip digital signal processing
  • Ultra Low Power (2.5uA)
  • Time-out for stuck key
  • Output mode (Direct / Latch / Toggle)
  • Seperate Proximity and Touch sensitivity
  • 6 pin TSOT23-6
  • Touch: 6mm plastic, 10mm glass
  • Proximity: 30cm


  • LCD, Plasma & LED TVs
    • Proximity enabled backlighting
  • Mobile Phones
    • GUI trigger on Proxmitiy detected
    • On ear activiation
  • Wake up from standby detection / touch keys
  • LED flashlights orheadlamps
  • White goods and appliances
  • Office equipment, toys
  • Hermitically sealed Human Interface Devices
  • Replacement for electromechinical switches
  • Find-In-The-Dark (FITD) applications
  • Automotive:
    • Door pocket lighting, electric window control
Let us help you implement your IQS227AS.
We’ve done it before.
If you don’t believe us test it yourself.

Includes 2x IQS227AS Stamp modules and 2x IQS228AS Stamp modules.
Embed into custom design and interface to host MCU to evaluate capacitive, inductive and hall-effect functions.

NOTE: CT210/A and IQS227AS/228AS Shield board sold separately.

Iqs227 Ev01 Azoteq Product Evaluation Kits
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User Guide

Includes 1x IQS227AS/228AS Shield board, 3x IQS227AS Stamp modules, 3x IQS228AS Stamp modules, 3x IQS227AS IC’s and 3x IQS228AS IC’s.
Connect Shield board and Stamp module to PC via CT210/A to evaluate proximity and touch functions with GUI.

 NOTE: CT210/A sold separately.

Iqs227 Ev02 Azoteq Product Evaluation Kits
Order Online
User Guide

Azoteq provides software used for the serial streaming of data to a computer utilising the Azoteq USB-dongles. Each IC has its own dedicated software and is intended for prototyping purposes and can be found on the Azoteq website under Software and Tools.

Order Online
User Guide
Feel free to order us around.