DocumentCode :
1702310
Title :
Circuit analysis by using a device simulator
Author :
Gnudi, A. ; Ciampolini, P. ; Guerrieri, R. ; Rudan, M. ; Baccarani, G.
Author_Institution :
Universita di Bologna
fYear :
1987
Firstpage :
201
Lastpage :
206
Abstract :
In the last few years, numerical-analysis programs for device simulation have progressed to a mature development stage, and some of them include such features as AC analysis or different types of boundary conditions. In this paper we present the analysis of a bipolar differential stage carried out by means of our program HFIELDS [1,2]. The purpose of the simulation is demonstrating how a numerical-analysis program embedding the features mentioned above can be profitably exploited to handle a simple but realistic functional circuit. The result of a steady-state simulation is taken as the starting point for the calculation of the differential and common-mode gains at various operating frequencies. This calculation requires the solution of a linear algebraic system whose dimension is about 6N x 6N, N being the number of unknown nodes. For this, two different techniques have been tested, depending on the position of the operating frequency with respect to the cutoff frequency.
Keywords :
Analytical models; Boundary conditions; Charge carrier processes; Circuit analysis; Circuit simulation; Current density; Cutoff frequency; Poisson equations; Resistors; Steady-state;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Numerical Analysis of Semiconductor Devices and Integrated Circuits, 1987. NASECODE V. Proceedings of the Fifth International Conference on the
Conference_Location :
Dublin, Ireland
Print_ISBN :
0-906783-72-0
Type :
conf
DOI :
10.1109/NASCOD.1987.721180
Filename :
721180
Link To Document :
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