Hi,
I am trying to get the clock signal as much clear as the plot in the user Guide. There is no big spur at least
But I only can get the clock Phase noise plot as below. All the setting is the default.
It seems that the spur comes from the Harmonic frequency : 50MHz (XTAL) * 2 (PDF doubler) / 32 ( Out_DIV) = 3.125MHz
3.125 MHz * 2= 6.25 MHz
3.125 MHz * 4 = 12.5 MHz
Do you have any idea about it ?