IQS324
The IQS324 ProxFusion® IC is a sensor fusion device for rotation and angle sensing applications using a diametrically-polarised magnet in an on- or off-axis configuration. The included ProxFusion® channel can be used for integrated UI applications and the on-chip virtual freewheel UI provides an intuitive augmented scrolling experience.
Main Features
- Highly Flexible ProxFusion® Device
- Hall-Effect Angle Sensor
- 4 Hall plates
- On-axis or Off-axis orientation
- 16-bit absolute angle output
- <1° angle error1
- Wide operational range
- Automatic Tuning Implementation (ATI)
- Automatic synchronisation with mechanical ratchets
- Hall-Effect Angle Sensor
- ProxFusion® channel
- Supports self-capacitive or inductive sensing
- Automatic Tuning Implementation (ATI)
- Button UI to detect large changes
- Movement UI to detect small/rapid changes
- Integrates with Hall angle sensor for virtual freewheel UI
- Interval UI
- Configurable number of intervals per rotation
- Configurable hysteresis between intervals
- Virtual Freewheel/Hyperscroll UI
- Integrates the ProxFusion® Movement UI with the Hall sensor to detect “flick” gestures
- Emulates a free-spinning wheel – adds hyperscroll functionality to devices without expensive mechanical assemblies
- I2C Interface With IRQ/RDY Signal
- Design Simplicity
- PC software for configuration and debugging
- Guidelines for magnet selection and mechanical constraints
- Supply Voltage: 1.8V to 3.5V
Applications
- Scroll-wheels for computer peripherals
- Mouse wheels
- Applications requiring flexible UI options with sensor fusion
- Mechanical and optical rotary encoder replacements
- Adjustment and control knobs