Patent ID: 8766832

Claim:
An analog-to-digital converter (ADC), comprising: an analog input stage comprising an output configured to generate an analog output signal; and a digital stage coupled to the output of the analog input stage and configured to classify the analog output signal into one of a plurality of consecutive voltage ranges; wherein responsive to the analog output signal being classified within a first enumerated range of the plurality of voltage ranges during a rotation of a sample, determining a voltage for a subsequent rotation of the sample as if the analog output signal is classified into a non-enumerated voltage range selected according to a state of a random number signal; and wherein the digital stage is further configured to: determine a first average of samples in which the analog output signal is classified in the first enumerated voltage range for a rotation and a voltage for a subsequent rotation is determined as if the analog input signal is classified into the voltage range immediately above the first enumerated range for the rotation; and determine a second average of samples in which the analog output signal is classified in the first enumerated voltage range for a rotation and a voltage for a subsequent rotation is determined as if the analog signal is classified in the voltage range immediately below the first enumerated voltage range.