Noise Performance

Noise performance depends on the sensor design, ground shielding, power supply, and the end target environment. Better noise performance can be achieved by complying with the general rules and recommendations for sensor designs. For better noise performance with long sliders, Flooded-X resistive interpolated slider sensor is preferred compared to a coplanar sensor.

The noise robustness of the system can be improved by adjusting the software parameters in PTC QTouch library namely Filter Level, Auto Oversampling, Prescaler, Sense Resistor, and Acquisition Frequency Mode.

Refer QTouch Library Peripheral Touch Controller User Guide for more details about PTC QTouch library and its associated parameters.

Refer PTC Robustness Design Guide for additional information on Sensor Tuning for high noise immunity.