Hi Dominik,
Thanks. However, maybe I have questioned in a wrong way.
What I meant to ask was if there is any architecture where the pre-amplifier is part of the positive feedback circuit, that is, instead of having the differential pair as a first stage, lets say, and then the positive fdbck as a second, can we have that positive feedback for example as a load for the differential pair?
If it is possible, what's the nome of such circuit?
In my case the fast comparator is to be used to compare a sawtooth wave with a reference that will vary very slowly.
Hope made myself more clear.
Thanks in advance.