Title :
Two-step continuous-time incremental sigma-delta ADC
Author :
Tao, Shifei ; Rodriguez, Saul ; Rusu, Ana
Author_Institution :
Sch. of ICT, KTH R. Inst. of Technol., Stockholm, Sweden
Abstract :
A two-step continuous-time (CT) incremental sigma-delta (IΣΔ) ADC, which enhances the performance of conventional CT IΣΔ ADCs, is proposed. By pipelining two second-order CT IΣΔ ADCs, the proposed two-step architecture can achieve high resolution without sacrificing the conversion rate. Compared to other alternatives, the two-step CT IΣΔ ADC exhibits the freedom of adjusting its accuracy and speed independently while featuring quite relaxed circuit specifications.
Keywords :
sigma-delta modulation; circuit specifications; conversion rate; pipelining two second-order CT IΣΔ ADC; two-step continuous-time incremental sigma-delta ADC;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.1096
