3.2.3 Sensor Amplitude Selection

The oscillation amplitude of the LDC1612 sensor is determined by the drive current strength and is adjustable by the device register settings. Larger sensor oscillation amplitudes improve system SNR, but could result in higher emissions. The oscillation amplitude has been chosen to be 1.3 V_P, which is in the recommended range according to datasheet specifications. It is important to note that as the metal approaches the sensor, the oscillation amplitude will decrease. Therefore it is important to set the oscillation amplitude with the metal present in the system to maintain good system SNR.