A time-domain technique for computation of noise spectral density in switched capacitor circuits

Author

Vasudevan, V.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai, India

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

This paper presents a new time domain technique for computing the noise spectral density. The power spectral density is interpreted as the asymptotic value of the expected energy spectral density per unit time. We show that the methodology of stochastic differential equations can be used to derive a set of ordinary differential equations for the expected energy spectral density. This set of equations can then be integrated in time until the steady state value of the power spectral density is obtained. The method is quite general and can be used to find the noise spectrum in any circuit in which noise can be treated as a perturbation. In this paper, the algorithm has been used to simulate the spectrum of the noise voltage in switched capacitor circuits.

Keywords

circuit noise; differential equations; network analysis; switched capacitor networks; time-domain analysis; SC circuits; noise spectral density; noise spectrum; noise voltage; ordinary differential equations; stochastic differential equations; switched capacitor circuits; time domain technique; Charge transfer; Circuit noise; Circuit simulation; Differential equations; Power engineering computing; Stochastic resonance; Switched capacitor circuits; Switching circuits; Time domain analysis; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205631

Filename

1205631