Hello,
This seems overly simple, so I am guessing there are untold details. What you ask for in the description is very easy, and I can also provide the assembled and tested boards if there are no exotic requirements. What is the signal you are attempting to capture? Just in case, are you aware you must be sampling >2X the speed of your expected fastest signals? With this being the case, your communictions must also be able to reliably send the data at 2X that rate, or >4X your signal rate.
Let me know if I can be of service.
Best regards,
Stuart Borden.