Current-mode Universal Filter with Four Inputs and One Output using CDTAs

Author

Dumawipata, Teerasilapa ; Tangsrirat, Worapong ; Surakampontorn, Wanlop

Author_Institution

Fac. of Eng. & Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol., Bangkok

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

892

Lastpage

895

Abstract

A current-controlled multiple-input single-output current-mode universal filter employing current differencing transconductance amplifiers (CDTAs) as active elements is described. The proposed circuit offers the following attractive features: employment the minimum number of active and passive components; simultaneous realization of all the standard filtering functions; independent current-control of the parameters omega₀ and omega₀/Q; no requirement of component matching conditions; employment of only two grounded passive capacitors which is suitable for integrated circuit (IC) implementation; and low passive and active sensitivities

Keywords

active filters; current-mode circuits; operational amplifiers; current differencing transconductance amplifiers; current-controlled multiple-input single-output universal filter; current-mode universal filter; integrated circuit implementation; low active sensitivity; low passive sensitivity; standard filtering functions; Active filters; Capacitors; Circuits; Employment; Equations; Information filtering; Information filters; Passive filters; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342185

Filename

4145537