Category: Hardware
Product Number: AD9125
Hello. Please help me.
Q1：output abnormal
I am seeing anomalies in the output waveform on the AD9125.
This is happening on the board I designed.
The figure below shows an abnormal waveform, in which the phase changes at approximately 500ns.
Is there anything I should review in register settings?
The operation is as follows.
・DCI=120MHz
・REFCLK=120MHz
・Dual-word mode
・HB1+HB2=Enable
・Internal DACCLK = 480MHz
I wrote the settings of each register in Excel.
This phenomenon can sometimes be improved by changing bit6 of 0x0A from "0" → "1" → "0".
Q2：FRAME signal
Also, the FRAME signal is set to HIGH at the same time as RESET.
Is there a recommended treatment for the FRAME signal?
Best Regards.
