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AD9244 output word has outliers (wrong data)

Question asked by on Mar 5, 2013
Latest reply on Mar 26, 2013 by David.Buchanan



My ADC System is as follows:

50 Ohm terminated input signal -(differential)-> AD8138 -(differential)-> AD9244-40.

The ADC runs at 16 Mhz, it has only a simple low-pass input filter (2 x 33R, 22pF).


My Problem:

Data conversion generally works, but i get wrong output data from time to time (please see attached pictures).



1.) This has nothing to do with aliasing, right? --> a more complex input filter would not help.

2.) It is more likely that some clock interferes?


Thank you!