IQS231B
The IQS231B is a single channel capacitive proximity/touch controller for SAR applications. The IQS231B has human movement detection and can detect human interaction during power on and a quick release. The device also features failsafe operation with a heartbeat.
Features:
- Optimized for SAR applications
- Human movement detection - distinguish between humans and inanimate objects
- Failsafe operation with heartbeat
- Quick release for preventing unwanted activations
- Minimal external components
- Standalone and I2C modes
- OTP or I2C configuration
- Optional external threshold adjustment
- Self and Projected capacitive sensing
- Synchronization input for strategic sampling windows
- Various power modes: 100Hz, 30Hz, 8Hz, 4Hz sample rates
- Pin compatible replacement solution for the IQS128
- 6 pin TSOT23-6
- 8 pin WLCSP (IQS231A)
Applications:
- SAR Sensor
- Hybrid antennas (RF and capacitive sensing combined)
- Movement sensing applications (user interaction detection, anti-theft)
- Hold detection for screen activation
- On-ear detection