Patent ID: 7277033
Filing Date: 2007-10-02
Classification: H03M

Abstract:
1. A method comprising: a) converting a digital dither signal to an analog dither signal; b) providing the analog dither signal to an impedance network and responsively producing a first set of reference dither signals proportional to the analog dither signal; c) at each comparator of a plurality of comparators, receiving an analog input signal and a respective reference dither signal of the first set of reference dither signals proportional to the analog dither signal and comparing the received analog input signal to the received respective reference dither signal of the first set, wherein the analog input signal received at each comparator is not provided to an adding circuit prior to being received by that comparator, wherein an output of each comparator, in combination, produce a first output code; and d) subtracting a first dither signal reference code from the first output code so as to produce a second output code.