Product Overview
The IQS269A00QNR from Azoteq is a 14-channel ProxSense capacitive touch and proximity controller with automatic calibration. It provides both proximity detection (hover) and touch detection, making it ideal for advanced HMI with gesture capabilities.
Key Specifications
| Function | ProxSense capacitive touch controller |
| Channels | 14 capacitive sensing channels |
| Detection | Proximity + touch |
| Interface | I2C / SPI |
| Supply Voltage | 1.71V to 3.6V |
| Auto-Calibration | Yes |
| Package | QFN-20 (4x4mm) |
Working Principle
14 capacitive sensing channels measure charge transfer through PCB electrode patterns. A correlating dual-sampling technique rejects environmental noise. Proximity detection threshold is lower than touch threshold, enabling hover-before-touch UI. Auto-tracking compensation adapts to environmental drift without host intervention.
Applications
- Smart home control panel
- Appliance touch interface
- Automotive touch button
- Proximity-gesture HMI