We would like to use AD9656 for narrow-band application (circa 90MHz - 110MHz). Problem is that AD9656 has high fullscale for our application.
We have good experience with interfacing ADc with buffered inputs where transformers with 1:4 impedance ratio are used to achieve lower fullscale (see MT-006, MT-228 and AN-935).
The AD9656 has switched-capacitor input so this solution is more challenging. Do you think it is solvable? If so can you please provide input impedance parameter for band of interest?
Thanks and regards