SIGMA-DELTA CONVERTER

摘要

The invention relates to a sigma-delta converter comprising a plurality of sigma-delta processing stages, each processing stage including an analog processing cell (20 i ) and a quantifier (30 i ), wherein the processing stages are connected together so that a processing stage processes at least a portion of the noise of another processing stage in the converter, and wherein at least one processing stage includes an analog processing cell (20 i ) which is a low-pass or high-pass one of at least the second order or a bandwidth one of at least the fourth order.