The LDC3114 allows for sensor coils to be placed remotely rather than next to the IC due to the addition of the COM pin and placing the sensor capacitor near the device instead of next to the coil. This provides a better EMI response for the coil and eliminates the need for additional filtering in most cases. Due to the sensor coils being placed at different distances from the IC, the trace lengths vary and cause a slightly different series resistance value for each coil. This can also lead to a slightly different resonant frequency of the different sensors but since the button application uses the baseline tracking algorithm, it does not need to have an exact measurement on each channel and cares more about the change in the data than what the data value starts at.