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need help to select high performance ADC for 0.8 - 20 MHz signals

Question asked by piller on Sep 18, 2012
Latest reply on Sep 19, 2012 by piller

I want to select a high performance 14 or 16 bit ADC that can be used to digitize RF input signals in the range of 0.8 - 20 MHz.  I have identified several ADCs with good specs for SINAD, ENOB, SNR, SFDR, linearity and jitter such as the AD9255, AD9258, AD9265, AD9268, AD9650.  The data sheets do not show the performance down at 0.8 or 1.0 MHz so how can I pick a device?   Thanks.