The analog discovery's inputs are specified at 24 pF input capacitance parallel with 1 Mohm.
I assume this is specified with the probing wires.
Without this probing wires, it could be about 5pF... or am I wrong?
If the input signal is kept within +/- 1.8V, can the bandwidth of the input be improved to about 50MHz?
Or is there a low pass filter that attenuates higher frequencies?
I see from the link below that there is 99% magnitude at 5MHz and 97.5% magnitude at 10MHz.
Do you think a FET op amp external to the input could improve the bandwidth by reducing the capacitance further?