Title :
A comparison of two actively compensated active-RC filters
Author_Institution :
Dept. of Electr. Eng., Tennessee Technol. Univ., Cookeville, TN, USA
Abstract :
A number of authors have proposed the use of additional operational amplifiers (op amps) for compensating the detrimental effects of the frequency-dependent gains of the op amps already used in the circuit. The technique is known as active compensation. Among all such actively compensated circuits, two circuits have been derived from the single-amplifier biquad (SAB) of Deliyannis-Friend. These two circuits possess very low passive and active sensitivities. A comparison is made of their performances not only with respect to the active sensitivities but also from the point of requiring matched op amps and their stability
Keywords :
active filters; compensation; sensitivity analysis; Deliyannis-Friend; active compensation; active sensitivities; active-RC filters; actively compensated; additional operational amplifiers; frequency-dependent gains; matched op amps; single-amplifier biquad; stability; Circuit analysis; Circuit noise; Circuit stability; Computer simulation; Equations; Frequency dependence; Matched filters; Operational amplifiers; Resistors;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100677
