Precise dynamic hysteresis

An analog comparator circuit with associated hysteresis logic operably disposed to provide a logic switching mechanism based upon an input voltage level includes a voltage comparator block operably disposed to receive a voltage input signal at a positive terminal of the voltage comparator block and a selected reference voltage at a negative terminal of the voltage comparator block and is operable to produce a logic output based upon a favorable comparison. The hysteresis logic block is operable to produce one of a plurality of reference voltage levels to the negative terminal of the voltage comparator block as the selected reference voltage based upon a two-level reference signal input and further based upon a detected transition in logic of an output produced by the voltage comparator block wherein the output is received by the hysteresis logic block in a feedback signal.