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AD6645-80 Error in ADC Codes

Question asked by Philipp123 on May 22, 2015
Latest reply on May 22, 2015 by Philipp123


we have designed a digitizer board with 3 ADCs. Two of them are pin compatible adcs from another vendor and one is the AD6645ASVZ-80. We have some problems with this AD data converter!


1. Example: Sampling Frequency 40MHz, Input Sine 10k


The source of this bit toggling is the AD6645. I can measure this also with an analog scope. The fpga works correct.


2. I observed different patterns of error codes. It depends on the sampling frequency. Here's another example

Sampling Freq: 80MSPS, 1k Sine



I think this IC is defective. What should i do?


Best regards,