Title :
Approaches to simulating continuous-time delta sigma modulators
Author :
Cherry, James A. ; Snelgrove, W. Martin
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
Several different approaches for the simulation of continuous-time delta sigma modulators are listed, and their tradeoffs in terms of realism vs. simulation speed are examined. Apart from the moderately-obvious methods of directly implementing the system differential equations (fast) and full circuit-level simulation using SPICE (slow), a new method based upon the equivalence between continuous- and discrete-time filters inside the delta sigma loop is reported herein, with illustrations of its application
Keywords :
SPICE; circuit analysis computing; continuous time systems; differential equations; equivalent circuits; modulators; sigma-delta modulation; SPICE; circuit-level simulation; continuous-time delta sigma modulators; continuous-time filters; delta sigma loop; discrete-time filters; filter equivalence; simulation speed; system differential equations; Circuit simulation; Delta-sigma modulation; Differential equations; Filters; Mathematical model; Nonlinear equations; SPICE; Sampling methods; Switches; Voltage;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704581
