Title :
An efficient simulation method for oversampled Delta-Sigma modulators
Author :
Ahmed, Y. ; Opal, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
An efficient simulation method for over-sampled Delta-Sigma modulators is presented. This method is based on partitioning the modulator circuit into linear and nonlinear blocks. A behavioral model is used for the nonlinear block while a fast sampled data technique is used for the solution of the linear circuit equations. This technique converts the solution of the linear circuit equations into one matrix-vector multiplication per clock phase instead of numerical integration. This approach allows the designer to investigate the effect of circuit non-idealities and different types of quantizers quickly and efficiently
Keywords :
circuit analysis computing; sigma-delta modulation; behavioral model; circuit nonidealities; circuit partitioning; linear block; linear circuit equations; matrix-vector multiplication; nonlinear block; oversampled delta-sigma modulators; quantizers; sampled data technique; simulation; Circuit simulation; Clocks; Computational modeling; Delta modulation; Ear; Filtering; Frequency; Linear circuits; Matrix converters; Noise shaping; Nonlinear equations;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.519017
