My customer wants to use AD9528 as shown in the attached image.
When the customer tested the setting on the AD9528 EVB, the PLL2 of AD9528 was unlocked.
The customer replaced only the VCXO clock of EVB(122.88M) with the wanted frequency(156.25M)
Is there a problem with the setting that the customer want to use ?
Please, advice the customer why AD9528's PLL2 is not locked.
Thanks a lot.