Our IF signal freqency is about 450MHz with bandwidth 30MHz, can this signal be inputted to AD9253 ? I can't find performence specification for input signal above 200MHz. What is the isolate performance between four channels in AD9253?
450MHz is a high frequency input and is in the 8th Nyquist zone making it a heavily undersampling situation. We do not have any data under these measurement conditions. However, with a proper input network the AD9253 should be able to sample it. The AC specifications table shows isolation performance but this is taken at low frequency. A lot of the crosstalk will be dominated by the board design as well.
Good luck with your design.
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