@Fvm: Don't laugh, but with OP you mean....?? a gain stage?? What i want is the rising slope of the comparator when it changes state to cross the threshold at which my memory that follows change state, at the same time, no matter what temperature i'm operating. I mean, i want to change my memory for example, every cross+50nsec. I dont care when the comparator will start changing or if it will change faster for higher temps than in low (as is happening). But that the point of changing state in my following memory will be the same all the time. Maybe i'm asking too much from my circuit.