Title :
Stability analysis and system design of sigma-delta modulators
Author :
Chen, Chih-Yuan ; Chang, Rong-Guey ; Hong, Jia-Hua ; Lee, Shuenn-Yuh
Author_Institution :
Dept. of Comput. Sci. & Inf. Engineerin, Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
A system design with new empirical stability criteria for sigma-delta modulators is proposed. The stability criteria is a cubic function obtained by the least square method, and simulations including coefficients variation due to component mismatches of circuit implementation are included. By using the proposed methodology, several stability criteria of different targets (e.g., architectures, oversampling ratios (OSRs), and multi-bit) are found.
Keywords :
circuit stability; least squares approximations; sigma-delta modulation; cubic function; least square method; oversampling ratios; sigma-delta modulators; stability analysis; system design; Analytical models; Circuit simulation; Delta-sigma modulation; Differential equations; Digital modulation; Least squares methods; Stability analysis; Stability criteria; System analysis and design; Upper bound; automatic synthesis; least square; sigma-delta modulator; stability analysis;
Conference_Titel :
Integrated Circuits, ISIC '09. Proceedings of the 2009 12th International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-9-8108-2468-6
