Voltage differencing gain amplifier (VDGA) and its application

Author

Satansup, Jetsdaporn ; Tangsrirat, Worapong

Author_Institution

Fac. of Eng., Rajamangala Univ. of Technol. Rattanakosin (RMUTR), Nakhon Pathom, Thailand

fYear

2013

fDate

4-6 Sept. 2013

Firstpage

303

Lastpage

306

Abstract

A circuit realization of the voltage differencing gain amplifier (VDGA) using only tunable transconductance cells is described in this paper. The newly defined element is conceptually a combination of the voltage differencing unit and the current-controlled voltage amplifier. The advantage feature of the proposed element is that the important transfer characteristics are electronically tunable by means of external bias currents. As application example, the resistorless realization of voltage-mode biquad filter based on the proposed VDGA is also introduced. PSPICE simulation results are given to confirm the theoretical analysis.

Keywords

differential amplifiers; electric current control; electrical conductivity; filters; PSPICE simulation; VDGA; circuit realization; current-controlled voltage amplifier; resistorless realization; transfer characteristics; tunable transconductance cells; voltage differencing gain amplifier; voltage differencing unit; voltage-mode biquad filter; Band-pass filters; Barium; CMOS integrated circuits; Filtering theory; Gain; Transconductance; Voltage Differencing Gain Amplifier (VDGA); biquad filter; resistorless realization; voltage-mode circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies (ISCIT), 2013 13th International Symposium on

Conference_Location

Surat Thani

Print_ISBN

978-1-4673-5578-0

Type

conf

DOI

10.1109/ISCIT.2013.6645869

Filename

6645869