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Symbolic analysis of switched-capacitor networks using compacted nodal analysis in the s-domain

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2 Author(s)
Floberg, H. ; Dept. of Appl. Electron., Lund Univ., Sweden ; Mattisson, S.

This short paper presents a method that makes it possible to analyze switched-capacitor (SC) networks in discrete time using compacted nodal analysis in continuous time. Our objective is to perform time-discrete analysis in the z-domain using any symbolic analysis tool (e.g. CASCA) intended for analysis of time-continuous networks in the s-domain. A new equivalent analog circuit is used to describe the switched capacitors in the s-domain with z=s instead of z=esT which gives a simple translation between the two domains. Two SC examples are considered: an inverting amplifier and a biquad

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:16 ,  Issue: 10 )