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Analysis of switched-capacitor circuits using driving-point signal-flow graphs
ISSN der Zeitschrift
This paper extends the driving-point signal-flow graphs to switched-capacitor (SC) circuits by introducing a new theoretical element: an auxiliary voltage source that transfers no charge. In contrast to existing SFG methods, our method has no restrictions as to what types of SC circuits can be analysed, it requires no equivalent circuits or tables, and it works with two-phase as well as multi-phase SC circuits of any complexity. Compared to charge-equation matrix methods, it requires more effort, but is better suited for hand analysis because it makes causal relationships visible. Three illustrative examples are given to show the efficiency of the method and present a few application hints: a voltage doubler, the standard SC integrator, and a four-phase circuit simulating an inductor.
Switched-capacitor circuits, Signal-flow graph, Driving-point impedance, Multi-phase SC networks, Circuit analysis
DOI der Originalpublikation
SCHMID, Hanspeter und Alex HUBER, 2018. Analysis of switched-capacitor circuits using driving-point signal-flow graphs. Analog integrated circuits and signal processing. 2018. Bd. 96, S. 495–507. DOI 10.1007/s10470-018-1131-7. Verfügbar unter: https://doi.org/10.26041/fhnw-4067