We are using AD9548/PCBZ Evaluation Board,and would like to confirm the software of it.
The user can set the four parameters of DPLL.
Loop Bandwidth,Phase Margin,3rd Pole Attenuation Offset,and 3rd Pole Attenuation. below,
Pls refer to the attached file.
Q1:We understand the relation between our setting and the actual characteristic, as shown in a figure.
Is this graph is correct?.
Q2. The 3rd_Pole_Attenuation can set from 3dB to 12dB.
Is the 3rd_Pole_Attenuation equal to the value of point-A?.
Pls give the advice to us.