Mask topologies- a means to minimizing sensitivity to clock jitter in higher-order continuous-time sigma-delta modulators

Abstract

A A ? : This paper proposes and reports on results of a novel method that highly reduces the undesirable effects of clock jitter and makes the use of higher-order continuoustime sigma-delta modulators a reality thereby paving the way to the possibility of Sigma-Delta modulators operating at GHz frequencies with reduced power consumption and much simplified implementation complexities compared to their Discrete-Time Counterparts. The novel technique reported in this paper is primarily dependent on the use of HRZpulseprofiles on the feed-back DAC and the use of the MASH architecture, with a fast and accurate sample and hold circuit behveen eachfirst order stage.