Title :
Post-optimization of Delta-Sigma modulators considering circuit non-idealities
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Minnesota, Duluth, MN
Abstract :
Traditional system-level design of delta-sigma modulators follows a method based on linear modeling of the modulators without considering circuit-level non-idealities. In this paper, we propose to post-optimize system-level delta-sigma modulators considering circuit-level non-idealities after the traditional design. In addition, due to stochastic modeling of circuit-level non-idealities, performance evaluation of the system-level modulators is noisy. Therefore, stochastic post-optimization of modulators is needed so that noisy performance evaluation is not misleading the search for an optimal design solution.
Keywords :
circuit optimisation; delta-sigma modulation; integrated circuit design; integrated circuit modelling; circuit-level nonidealities; delta-sigma modulators; optimal design solution; performance evaluation; stochastic modeling; stochastic post-optimization; system-level design; system-level modulators; Circuit noise; Circuit simulation; Delay; Delta modulation; Design methodology; Design optimization; Mathematical model; Stochastic processes; Stochastic systems; System-level design; Circuit non-idealities; Delta-Sigma modulator; Optimization; Synthesis; System-level design;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541975
