Direct analysis of multiphase switched-capacitor networks using signal-flow graphs

Abstract

-A by-inspection analysis method for multiphase switcbedcapacitor (SC) networks using signal-flow graph (SFG) techniques is presented. The method is quite general; no restrictions on the networks are required. It is also very simple and direct in the sense that it allows an immediate, by-inspection derivation of the SFG merely on the basis of a given SC network. The method is primarily useful for the hand analysis and design of small and medium-size SC networks (e.g., building blocks of modular SC systems). It may also serve as a tool for the symbolic computer analysis and for the synthesis of general multiphase SC nehvorks. Illustrative examples demonstrate the simplicity and efficiency of the method.

Fully graph solution of the sensitivity of switched circuits

“…The problem of sensitivity determination has been investigated in a great number of publications during the last decades [15], [16], [17], [18], [19], [20], [21] and many others. A typical problem here is the determination of the derivates in the sensitivity expressions and its decision had been searched in different ways.…”

Analysis of switched-capacitor circuits using driving-point signal-flow graphs

“…Both [13] and [14] succeed in making the signal flow visible, but the graphs are not one-to-one maps of the circuits. Furthermore, the methods only work for sourcesink-node (SSN) networks [14], which means that all nodes are either at a voltage source or at an amplifier input.…”

“…Furthermore, the methods only work for sourcesink-node (SSN) networks [14], which means that all nodes are either at a voltage source or at an amplifier input. Many circuits, e.g., those doing correlated double sampling and voltage multiplication, are therefore not covered.…”