Title :
Signal flow graph analysis of feedback amplifiers
Author_Institution :
Dept. of Electro. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
fDate :
6/1/2000 12:00:00 AM
Abstract :
A systematic way of transcribing the schematic of an integrated circuit into its signal flow graph (SFG) equivalent is presented. With this SFG, transfer functions, loop gains, and input and output impedances are readily computed. The analysis is valid for multiloop amplifiers and the computation of a three-stage amplifier with nested Miller compensation is presented to illustrate the robustness of the method. Two theorems of SFG relating the stability of networks are also derived
Keywords :
analogue integrated circuits; circuit stability; electric impedance; equivalent circuits; feedback amplifiers; linear network analysis; signal flow graphs; transfer functions; SFG equivalent; feedback amplifiers; input impedance; integrated circuit; loop gains; multiloop amplifiers; nested Miller compensation; network stability; output impedance; signal flow graph analysis; three-stage amplifier; transfer functions; Circuits; Design methodology; Estimation error; Feedback amplifiers; Filters; Flow graphs; Noise robustness; Recurrent neural networks; Signal analysis; Signal processing;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
