I used AD10200 in my project. I tested AD10200 with signal generator. The sampling clock is 105MHz. FFT N=65536.
When I input 10MHz sine wave, the FFT result looks good. Please see below pic.
but when I input 41MHz, 71MHz or 105MHz respectively, the results look poor, please see below pics.
I am not sure why the waves are abnormal. Could you please help give me some comments on the issues?
Thanks in advance for your help!