DocumentCode :
1188573
Title :
Two-amplifier active-RC biquads with minimized dependence on op-amp parameters
Author :
Schaumann, Rolf
Volume :
30
Issue :
11
fYear :
1983
fDate :
11/1/1983 12:00:00 AM
Firstpage :
797
Lastpage :
803
Abstract :
It is generally recognized that the best two-amplifier active- 
biquads show a better performance with lower sensitivities than single-amplifier biquads (SAB\´s), and that the performance of an SAB can be improved by use of a composite amplifier. In this paper it is demonstrated that by matching the characteristics of a composite amplifier to the specific filter\´s requirements a "composite single-amplifier biquad" (CAB) can be obtained with significantly better performance than that of the best two-amplifier biquads reported to date. The resulting circuits are shown by theory and experiment to belong to the best available active- filters.
biquads show a better performance with lower sensitivities than single-amplifier biquads (SAB\´s), and that the performance of an SAB can be improved by use of a composite amplifier. In this paper it is demonstrated that by matching the characteristics of a composite amplifier to the specific filter\´s requirements a "composite single-amplifier biquad" (CAB) can be obtained with significantly better performance than that of the best two-amplifier biquads reported to date. The resulting circuits are shown by theory and experiment to belong to the best available active- filters.Keywords :
Active filters; Active filters, RC; Biquadratic functions; Circuit sensitivity optimization; Circuit topology; Circuits and systems; Filtering theory; Frequency; Matched filters; Negative feedback; Operational amplifiers; Performance gain; Q factor; Q measurement;
fLanguage :
English
Journal_Title :
Circuits and Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-4094
Type :
jour
DOI :
10.1109/TCS.1983.1085307
Filename :
1085307
Link To Document :
