Power supply recommendation, Figure 83, in the AD9691(Rev 0) datasheet,
3.3V Input -> ADP2164 (1.8V) -> ADP125 -> AVDD1_SR
It is normal power supply sequence as I know.
But in the ADP125(Rev D) datasheet,
Input voltage supply range of ADP125 is between 2.3V and 5.5V.
It is NOT include 1.8V.
I wonder I can design as figure 83? ( = ADP125 have more range?)
or I must some modify?