New circuit modeling of operational amplifiers

Author

Golzio, D. ; Graffi, S. ; Masetti, G.

Author_Institution

Aeritalia GST, Caselle, Italy

fYear

1989

fDate

23-25 May 1989

Firstpage

143

Lastpage

150

Abstract

A description is given of the design of two macromodels for the 741 operational amplifier to be used for computer code simulation of electromagnetic interference (EMI) effects. These macromodels are designed with the ability to work outside the nominal frequency bandwidth of the real circuit in order to simulate the consequences of small and large amplitude signals representing EMI effects. The design starts with the analysis (via numerical simulations) of the full device level model. After the macromodel has been defined, its behavior is adjusted by comparison to experimental measurements on different circuit configurations and interference sources. Measured and simulated results are in agreement

Keywords

circuit CAD; digital simulation; electromagnetic interference; operational amplifiers; 741 operational amplifier; EMI effects; circuit configurations; circuit modeling; computer code simulation; design; device level model; electromagnetic interference; experimental measurements; frequency bandwidth; interference sources; large amplitude signals; macromodels; numerical simulations; small amplitude signals; Aerospace electronics; Bandwidth; Circuit simulation; Computational modeling; Electromagnetic compatibility; Electronic equipment; Filters; Frequency; Interference; Operational amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1989., IEEE 1989 National Symposium on

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/NSEMC.1989.37169

Filename

37169