I am trying to design a system to sample an RF signal using a 10MSPS 12 bit ADC (ADC12010CIVYX/NOPB). During frequency planning I observed that, to get a proper sample with out aliasing the input frequency should be at 9Mhz (or 19,29,39 etc) i.e. in the second (or even) Nyquist zone. My problem is that the RF signal is at UHF (409 MHz, so it would fall in the 82 nd Nyquist zone) and I would to know if there is an upper limit for the Nyquist zone that can be safely under sampled by the ADC.
Any help is greatly appreciated.