I have a logic circuit currently consisting a few few AND gates and it's working fine (simulating) with if i use logic levels as the inputs. However my input levels might change in amplitude and I'd like to be able to control the logic threshold with something else (like and DAC or something). What would be the simplest way to do this?
if it helps, my inputs are very short pulses, that should have the same amplitude, although the amplitude may very from time to time.