The IQS680 ProxFusion® IC is a multifunctional Capacitance, Passive Infrared Radial (PIR) & Inductance sensor designed for applications such as domestic energy efficient lighting applications with movement detection. The IQS680 is an ultra-low power solution designed for short or long term activations through any of the sensing channels. The IQS680 operates standalone or via the I2C protocol and custom configurations are stored in an on-chip EEPROM

Iqs680 Page


  • Unique combination of sensors:
    • Capacitive sensing
    • Inductive sensing
    • PIR sensing
  • Capacitive sensing:
    • 2pF to 200pF external capacitive load capability
    • Fully adjustable sensing options
    • Self-capacitance
  • Inductive sensing:
    • Distinguish between ferrous and nonferrous metals
    • Only external sense coil required (PCB trace)
  • PIR Sensing:
    • DSP algorithm for long range movement detection.
    • Automatic drift compensation
  • Low power consumption:
    • 59 uA (100 Hz responce)
    • 23 uA (10 Hz responce)
  • Multiple integrated UI's
  • Automatic Tuning Implementation (ATI) – performance enhancement (10bit)
  • EEPROM included on-chip for calibration data and settings
  • Minimal external components
  • Standard I2C interface (polling with sub 1ms clock stretching)
  • Optional RDY indication for event mode operation
  • Supply voltage: 1.8V to 3.6V
  • Low profile DFN(3x3) - 10 pin package


  • Under Cabinet Lighting (UCL)
  • Standard PIR sensor cost reduction
  • Smart Lights
  • Night Lights
  • Battery powered PIR sensors solutions
  • Movement detection
Let us help you implement your IQS680.
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Includes 1x IQS680 Shield board.
Connect IQS680 Shield board to PC via CT210/A to evaluate capacitive, inductive and PIR capabilities with GUI.

NOTE: CT210/A sold separately.

Iqs680 Ev02 Azoteq Product Evaluation Kits
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User Guide

Includes 1x IQS680 Self contained battery powered unit with Touch and PIR functions.
Install unit in a suitable location to evaluate PIR and touch capabilities.

Iqs680 Ev03 Azoteq Product Evaluation Kits
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User Guide

Includes 1x IQS680 Self contained battery powered unit with PIR and Inductive sensing.
Install into suitable cabinet/drawer and install metal(copper foil) as trigger mechanism to evaluate PIR and inductive sensing capabilities.

Iqs680 Ev04 Azoteq Product Evaluation Kits
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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.

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User Guide
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