Izvorni znanstveni članak
https://doi.org/10.30765/er.1441
Dual-mode multifunction filter realized with a single voltage differencing gain amplifier (VDGA)
Worapong Tangsrirat
orcid.org/0000-0002-4588-9523
; Department of Instrumentation and Control Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang (KMITL), Bangkok 10520, Thailand
Tattaya Pukkalanun
; Department of Instrumentation and Control Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang (KMITL), Bangkok 10520, Thailand
Orapin Channumsin
orcid.org/0000-0002-5164-7651
; Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Isan, Khonkaen Campus, Khonkaen 40000, Thailand
Sažetak
This article presents the dual-mode multifunction biquad filter realized employing only a single voltage differencing gain amplifier (VDGA), one resistor and three capacitors. The proposed filterwith one input and three outputs can configure as voltage-mode or current-mode filter circuit with the appropriate input injection choice. It can also synthesis the three standard filter functions, which are highpass, bandpass, and lowpass responses without modifying the circuit configuration. Orthogonal adjustment between the natural angular frequency (o) and the quality factor (Q) of the filter is achieved. Detail analysis of non-ideal VDGA effects and circuit component sensitivity are included. The circuit principle is verified by means of simulation results with TSMC 0.35-m CMOS process parameters.
Ključne riječi
voltage differencing gain amplifier (VDGA); multifunction filter; dual-mode operation; electronically tunable circuit; analog filter
Hrčak ID:
262293
URI
Datum izdavanja:
24.11.2021.
Posjeta: 831 *