Rapid estimation of the nonlinear frequency response of switched-capacitor circuits

Author

Mueller, Jeffrey G. ; Antao, Brian A A ; Saleh, Resve A.

Author_Institution

Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA

fYear

1995

fDate

1-4 May 1995

Firstpage

245

Lastpage

248

Abstract

Analysis of switched capacitor circuits in the presence of nonlinearities is a difficult problem. The standard programs such as SWITCAP provide only a first order linearized response. In this paper ¹ we present a novel technique for the rapid estimation of the nonlinear frequency response of switched-capacitor circuits. This method can be incorporated in existing circuit simulators with little effort. The method is based on using a multifrequency sinusoidal input excitation in a single time domain analysis until steady-state. The entire frequency response in the desired frequency range is then extracted using a frequency directed DFT. A comparison is made to the mixed-frequency-time (MFT) approach, which is a competitive method

Keywords

circuit analysis computing; digital simulation; discrete Fourier transforms; frequency response; switched capacitor networks; time-domain analysis; circuit simulators; frequency directed DFT; multifrequency sinusoidal input excitation; nonlinear frequency response; single time domain analysis; switched-capacitor circuits; Analytical models; Circuit simulation; Frequency estimation; Frequency response; Integrated circuit technology; Steady-state; Switched capacitor circuits; Switching circuits; Time domain analysis; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1995., Proceedings of the IEEE 1995

Conference_Location

Santa Clara, CA

Print_ISBN

0-7803-2584-2

Type

conf

DOI

10.1109/CICC.1995.518178

Filename

518178