1. A comparator circuit comprising: an amplifier configured to compare a first input signal with a second input signal and to provide an output signal at an output of the amplifier based upon the comparison; a non-linear function having a single input and a single output, the single input being operatively connected to the output of the amplifier; and a feedback loop operably operatively connected to the signal output of the non linear function, the feedback loop including a feedback limiting circuit that is operatively connected to a positive feedback final, the feedback limiting circuit being configured to attenuate the positive feedback signal.