Patent ID: 7358802

Claim:
A method for operating an amplifier having at least one operating parameter, the method comprising: a first phase, during which: a first-phase input voltage is applied to the amplifier to generate a first-phase amplifier output signal; and the first-phase amplifier output signal and a first-phase reference signal are applied to a comparator to generate a first-phase comparison result, wherein the first-phase comparison result depends on the at least one operating parameter; and a second phase, during which: a second-phase input voltage is applied to the amplifier to generate a second-phase amplifier output signal, wherein the second-phase input voltage is different from the first-phase input voltage; and the second-phase amplifier output signal and a second-phase reference signal are applied to the comparator to generate a second-phase comparison result, wherein the second-phase comparison result depends on the at least one operating parameter, wherein: the first-phase and second-phase comparison results are combined to generate a final result such that dependence of the final result on the at least one amplifier operating parameter is negated or reduced.