The IQS622 ProxFusion® IC is a multifunctional ambient light sensing (ALS), active IR, capacitance & Hall-effect sensor designed for applications where any or all of the technologies may be required. The IQS622 is an ultra-low power solution designed for short or long term activations through any of the sensing channels. The IQS622 is fully I2C compatible and can be configured to operate on an event mode basis to wake-up on dedicated sensors.

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Overview: View

PC Software: Download


IQS622 Smartphone demo

IQS622 for BT earphones

Status: Production



  • Unique combination of sensing technologies:
    • Capacitive sensing
    • Ambient light sensing (ALS)
    • Active IR proximity sensor
    • Hall-effect sensing


  • Capacitive sensing:Full auto-tuning with adjustable sensitivity
    • 2pF to 200pF external capacitive load capability


  • Ambient light sensing (ALS):
    • 4-bit ALS range output (0 - 10)


  • Active IR proximity sensor:ARMmbedPartner contextual blue
    • 60mm range
    • Pulsed LED current for lower power
    • 2 Level detection with hysteresis


  • Hall-effect sensing:
    • On-chip Hall-effect measurement plates
    • Dual direction Hall switch sensor
    • 2 level detection (widely variable)
    • Detection range 10mT – 200mT


  • Low power consumption:
    • 60μA (100Hz response, 2ch capacitive)
    •  26μA (100Hz response, ALS)
    •  32μA (100Hz response, active IR)
    •  80μA (100Hz response, 2ch Hall-effect)
    •  8μA (20Hz response, ALS)
    •  10μA (20Hz response, active IR)
    •  22μA (20Hz response, 2ch Hall-effect)
    •  2.5μA (4Hz response, 1ch cap. wake-up)


  • Multiple integrated UI options based on
    years of experience in sensing on fixed and
    mobile platforms:
    • Proximity wake-up / Touch
    • SAR


  • Automatic Tuning Implementation (ATI) – performance enhancement (10bit)
  • Minimal external components
  • Optional RDY indication for event mode operation
  • Supply voltage: 2.0V to 3.3V
  • Low profile DMA - 3.94 x 2.36 x 1.37 - 9-pin package


  • Laptops, Notebooks, Mobile phones, Tablets
    • On-ear detection
    • Screen brightness adjust
    • Keyboard backlight adjust
    • Smart cover detection and orientation
    • SAR
    • Touch volumes controls

Application Notes:

Coming Soon...