Digital to analog conversion circuits and methods utilizing single-bit delta-SIGMA modulators and multiple-bit digital to analog converters

摘要

A digital to analog converter re-codes a stream of 1-bit digital data into a stream of multiple-bit data with a gain greater than one. The resulting stream of multiple-bit data is then converted into analog form in a multiple-bit digital to analog converter. By applying a gain of greater than one to the 1-digital data stream the higher modulation index available in the multiple-bit can be exploited.