Patent ID: 7016421

Claim:
A delta-sigma modulator comprising: a node which produces a difference signal equal to a difference in magnitude between a continuous time analog input signal having a frequency F and N feedback signals generated from N digital output signals, where N is an integer number greater than one; an integrator, coupled with the node, which integrates the difference signal and produces an integrated signal; a set of N detectors; a sampler, which samples the integrated signal and produces a sampled integrated signal; a signal splitter connected with the sampler for separating the sampled integrated signal into N different outputs, the outputs of the signal splitter being coupled with the set of N detectors to supply different detectors with different sampled integrated signals to different detectors; a set of N quantizers, each quantizer being coupled with one of said N detectors and having a frequency response less than F, but of at least F/N, the quantizers each quantizingat least a portion of the sampled integrated signal and the set of N quantizers collectively producing the N digital output signals; and a set of N digital to analog modulators for converting the N digital output signals to generate the N feedback signals applied to said node.