Current feedback operational amplifiers: a tutorial
In a didactic approach, the amplifying properties of an inverter stage using a current feedback operational amplifier (COA) and one using a voltage feedback operational amplifier (VOA) are compared. Then, following a discussion of COA modelling, the frequency and transient responses of a COA non-inverter stage are analysed.
Get full access to this article
View all access options for this article.
References
1.
ToumazouC., LidgeyF. J., and HaighD. G. Eds., Analogue I.C. Design: the current mode approach, Peter Peregrinus, p. 569(1990)
2.
RagazziniJ. F., RandallR. H., and RusselF. A., ‘Analysis of problems in dynamics of electronic circuits’, Proc. I.R.E. (May, 1947)
3.
‘A New Approach To Op-Amp Design’, Comlinear Corporation Application Note 300:1 (1985)
4.
MillmanJ., and GrabelA., Microelectronics (2nd Ed.), J. Wiley, pp. 498–500 (1987)
5.
HartB. L., and BarkerR. W. J., ‘Universal operational-amplifier converter technique using supply current sensing’, Electronics Letters, pp. 496–497(1979)