I have a question about ADS6148 self-test mode.
My customer is using ADS6148 and meets an issue about digital error code of ADS6148.
the customer mentions that he will see an digital error code every 2M digital data when the input signal is 1MHz analog sine wave.
I ask he to use self-test pattern to see if there is any digital error code and everything is fine.
I want to use this self-test mode to prove that ADS6148 itself is fine and the issue is related to the schematic of his design.
However, the customer complains this self-test experiment only can guarantee the digital path of ADS6148 is fine but can't guarantee the A-to-D path of ADS6148 is fine.
I would like to know the principle of the self-test mode of ADS6148 and whether the self-test can guarantee the clock and ADS6148 itself are ok?
Thank you :)