Master equation for operational amplifiers: Stability of negative differential converters, crossover frequency and pass-bandwidth

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creativework.publisherAmerican Institute of Physics Inc.subs@aip.orgen
dc.contributor.authorMishonov T.M.
dc.contributor.authorStefanov A.A.
dc.contributor.authorPetkov E.G.
dc.contributor.authorDimitrova I.M.
dc.contributor.authorDanchev V.I.
dc.contributor.authorVaronov A.M.
dc.date.accessioned2024-07-10T14:27:04Z
dc.date.accessioned2024-07-10T14:49:04Z
dc.date.available2024-07-10T14:27:04Z
dc.date.available2024-07-10T14:49:04Z
dc.date.issued2019-02-26
dc.description.abstractThe well forgotten master equation from the seminal article by Ragazzini, Randall and Russell [J. R. Ragazzini, R. H. Randall and F. A. Russell, ``Analysis of Problems in Dynamics by Electronic Circuits``, Proc. of the I.R.E., 35, pp. 11-19, (1947)] is recovered as indispensable tool for the analysis of contemporary circuits with operational amplifiers. This equation gives the relation between time dependent the output voltage U 0 (t) and the difference between the input voltages (U + (t) and U - (t)). The crossover frequency f 0 parameterizes the time constant τ 0 of this equation. The work of the master equation is illustrated by two typical examples: a) the stability criterion of the devices with negative impedance converters, which we consider as a new result b) the frequency dependence of the amplifiers with operational amplifiers given in the technical specifications. A simple circuit for determination of f 0 is suggested and the method is illustrated by determination of crossover frequency for the low-noise and high speed ADA4898 operational amplifier. It is concluded that for an exact calculation of the pass bandwidth of amplifiers with active filters the 70 years old master equation is indispensable.
dc.identifier.doi10.1063/1.5091330
dc.identifier.issn1551-7616
dc.identifier.issn0094-243X
dc.identifier.scopusSCOPUS_ID:85062821889en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/518
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062821889&origin=inward
dc.titleMaster equation for operational amplifiers: Stability of negative differential converters, crossover frequency and pass-bandwidth
dc.typeConference Paper
oaire.citation.volume2075
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