New Universal Biquads Employing CFOAs

Four new single-input-multi-output-type universal biquad filters using current-feedback operational amplifiers (CFOAs) are presented, which realize all the five standard filter functions (namely, low-pass, bandpass, high-pass, notch, and all-pass) from the same configuration, provide tunability of t...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 53; no. 11; pp. 1299 - 1303
Main Authors Singh, V.K., Singh, A.K., Bhaskar, D.R., Senani, R.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.11.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active filters
Analog circuit design
Band pass filters
biquad filters
Capacitors
Circuit synthesis
Circuits
current-feedback operational amplifiers (CFOAs)
Hardware
Impedance
Integrated circuits
Low pass filters
Operational amplifiers
Simulation
SPICE
Spices
Workability
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Summary:Four new single-input-multi-output-type universal biquad filters using current-feedback operational amplifiers (CFOAs) are presented, which realize all the five standard filter functions (namely, low-pass, bandpass, high-pass, notch, and all-pass) from the same configuration, provide tunability of the various filter parameters in all the five responses, and offer a resistive or ideally infinite input impedance while employing only four CFOAs and two grounded capacitors as preferred for integrated circuit implementation. The workability of the new biquads has been verified by hardware implementations and SPICE simulations based upon AD844-type CFOAs, and some sample results are presented
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2006.882345