Part Number: ADC12DJ5200RF
Our problem is about SFDR “signal free dynamic range” we have a test tone at 350MHz and then we get a 2nd tone only 49-50 dB down.
I have done the measurement on only the analog part and that was not making this spure
(The return loss of the analog part(s22) is about 12-13 dB that I think is goof enough)
If I remember correct, the sfdr was about 65 dBfs so we lost about 15-20 dB on im2
Any ide what’s going on and is there way to improve this by register settings?
this pictur are 1: measured wth the ADC, 2: the input signal
