A peak-to-peak voltage of 0.5V should be sufficient for the referecen clock input signal. However, the peak amplitude shall not be too high, especially if the input is a square wave where there will be more harmonics.
A peak-to-peak voltage of 0.5V should be sufficient for the referecen clock input signal. However, the peak amplitude shall not be too high, especially if the input is a square wave where there will be more harmonics.