Title :
Behavioral modeling and simulation of weakly nonlinear sampled-data systems
Author :
Martens, Ewout ; Gielen, Georges
Author_Institution :
ESAT-MICAS, Katholieke Univ., Leuven, Heverlee, Belgium
Abstract :
The paper presents a systematic approach for modeling sampled weakly nonlinear systems using a formal computational model. Examples include sampled-data filters and data converters. The models can be written using constructs of standard hardware description languages which ensures that they can easily be used as part of a model of a larger system. The main application of the paradigm is situated in the systematic top-down synthesis of mixed-signal systems. Simulation of the models starts by splitting the model into an ideal (linear) and a non-ideal (weakly nonlinear) part. Each of them can be solved by a specific solver to reduce the simulation time compared to time-marching simulation of the entire model at once. Examples are presented to illustrate the usefulness of the proposed method.
Keywords :
circuit simulation; hardware description languages; integrated circuit design; integrated circuit modelling; mixed analogue-digital integrated circuits; nonlinear network synthesis; IC design; behavioral modeling; data converters; formal computational model; mixed-signal systems; sampled weakly nonlinear systems; sampled-data filters; standard hardware description languages; systems-on-chip; time-marching simulation; top-down synthesis; weakly nonlinear sampled-data systems; Clocks; Computational modeling; Design methodology; Filters; Hardware design languages; Mathematical model; Nonlinear equations; Nonlinear systems; Sampling methods; Signal design;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465070