Gadjeva, Elissaveta Dimitrova; Garmev, Zdravko Atanasov
Parameterized tolerance models of switched-capacitor circuits
Proceedings of the Technical University – Sofia, 56(1), 2006, pp. 53-58
TU - Sofia
parameterized PSpice models; sc-circuits; tolerance analysis
In the present paper, parameterized models are developed for tolerance analysis of SC-circuits using standard PSpice-like circuit simulators. They allow the assessment of the design component tolerances using Monte Carlo and Worst Case analyses. The tolerance models of the capacitor and operational amplifier are based on multiphase models in the z-domain and are realized in the form of multiport subcircuits. The tolerances are defined as model parameters. The description of the models is given in correspondence with the input language of the PSpice simulator. The tolerance field due to the design element tolerances and the histograms of the output characteristics are obtained in the graphical analyzer Probe. The developed models are verified using test examples.
Reviewer prof. Elena Shoikova. - Formulas, schemes, diagr. - References, pp. 52