Title :
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
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;
Conference_Titel :
Communications and Information Technologies (ISCIT), 2013 13th International Symposium on
Conference_Location :
Surat Thani
Print_ISBN :
978-1-4673-5578-0
DOI :
10.1109/ISCIT.2013.6645869
