linearisierter multi bit digital / analog converter and its use in a multi bit delta sigma analog / digital converter

摘要

A multi-bit digital/analog converter with M delta-sigma modulators and a sort logic that selects a number of DA elements according to the input signal of the converter so that the DA elements selected are associated with the quantifiers with the largest output signal and negative feedback of said modulators occurs. Oversampling and variable allocation of the DA elements eliminate the affect of DA element error on linearity, whereby relatively simple means are used.