Calculator-aided evaluation of integrated n-m.o.s. operational amplifiers

Author

Saleh, N. ; Tewfick, S.

Author_Institution

University of Riyadh, Electrical Engineering Department, Faculty of Engineering, Riyadh, Saudi Arabia

Volume

127

Issue

2

fYear

1980

fDate

4/1/1980 12:00:00 AM

Firstpage

67

Lastpage

74

Abstract

In this paper, the results are given of an investigation of first-generation integrated n-m.o.s. operational amplifiers. Calculator-aided simulation is used to study the performance and limitations of the stages and the overall amplifier. Quiescent conditions, differential-mode gain and common-mode gain are investigated. The transfer function of the overall amplifier is determined. The slew rate has been investigated, taking into consideration the complicated open-loop gain and the nonlinearity of the amplifier´s different stages. Finally, an improvement in the circuit design of integrated n-m.o.s. operational amplifiers is suggested. This is especially suited to amplifiers fabricated by advanced technologies.

Keywords

circuit CAD; field effect integrated circuits; linear integrated circuits; operational amplifiers; NMOS operational amplifiers; common mode gain; computer aided circuit design; differential mode gain; linear integrated circuits; open loop gain; quiescent conditions; slew rate; transfer function;

fLanguage

English

Journal_Title

Electronic Circuits and Systems, IEE Proceedings G

Publisher

iet

ISSN

0143-7089

Type

jour

DOI

10.1049/ip-g-1:19800013

Filename

4644532