Azoteq IQS624 ProxFusion® Sensor IC

Azoteq IQS624 ProxFusion® Sensor IC integrates multiple sensor technologies onto a single chip. The IQS624 offers Hall-effect rotation sensing, along with dual-channel capacitive proximity and touch sensing, or single-channel inductive sensing. The IQS624 is designed for applications where any or all of these technologies may be required. The two on-chip Hall-effect sensors calculate the angle of a magnet rotating parallel with the sensor.

The sensor is fully I2C compatible and on-chip calculations enable the IC to stream the current angle of the magnet without extra calculations. By combining multiple sensors onto a single sensor IC, the IQS624 ProxFusion Sensor IC allows developers to reduce the bill of materials, power consumption, and board space required for an application. The IQS624 is offered in a compact 3mm x 3mm DFN-10 package.


  • Hall effect angle sensor
    • On-chip Hall plates
    • 360° Absolute Output
    • 1° Resolution, calculated on chip
    • Relative rotation angle
    • Detect movement and the direction of movement
    • Raw data: can be used to calculate degrees on an external processor
    • Wide operational range
    • No external components required
  • Partial auto-calibration
    • Continuous auto-calibration, compensation for wear or small displacements of the sensor or magnet
    • Flexible gain control
    • Automatic Tuning Implementation (ATI)
      • Performance enhancement (10 bit)
  • Inductive sensing
    • Only external sense coil required (PCB trace)
  • Capacitive sensing
    • Full auto-tuning with adjustable sensitivity
    • 2pF to 200pF external capacitive load capability
  • Multiple integrated UI
    • Proximity / Touch
    • Proximity wake-up
    • Event mode
    • Wake Hall sensing on proximity
  • Minimal external components
  • Standard I2C interface
  • Optional RDY indication for event mode operation
  • Low power consumption
    • 240uA (100Hz response, Hall)
    • 55uA (100Hz response, capacitive)
    • 65uA (20Hz response, Hall)
    • 15uA (20Hz response, capacitive)
    • 5uA (5Hz response, capacitive)
  • Supply Voltage 2.0V to 3.6V


  • Anemometer
  • Dial or Selector knob
  • Mouse wheel
  • Measuring wheel
  • Digital angle gauge
  • Speedometer for bicycle


Zveřejněno: 2017-06-08 | Aktualizováno: 2022-03-11