FGMOS BASED VDTA AND ITS APPLICATION AS A BIQUAD FILTER
Abstract
Abstract—The voltage differencing transconductance amplifier(VDTA) is a very new introduced active elements for fast processing of filters and oscillators. The realization of VDTA using CMOS was first given in [2].VDTA can also be realized as a tunable universal filter [3] by using only one VDTA block and two grounded capacitors and by setting the input conditions accordingly and it also provides the control over natural angular frequency as well as quality factor But the filter given in [2] was realized using TSMC 0.35µm model parameter with DC voltages of +V=-V=2Volt.In this paper we used VDTA as a bi quad filter and realize the filter using 180nm model parameter with DC supply voltages of +V=-V=0.75Volt.Hence,we are working on low voltage technique by replacing the MOSFETs in current mirror[2] to FGMOS. To check the performance of proposed circuit computer simulations are accomplished with the LTSPICE.
References
[2] A. Yesil, F. Kacar, H. Kuntman, New simple CMOS realization of voltage differencing transconductance amplifier and its RF filter application, Radioengineering 20
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[3] Jetsdaporn Satansup, Worapong Tangsrirat, Compact VDTA-based current-mode electronically tunable universal
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[4] J. Satansup, T. Pukkalanun, W. Tangsrirat, Electronically tunable single-input five-output voltage-mode universal filter using VDTAs and grounded passive elements, Circuits Syst.Signal Process 32 (2013) 945–957.
[5] J. Satansup, W. Tangsrirat, Single VDTA-based voltage-mode electronically tunable universal filter, Sapporo, Japan, 2012 (In Proc. ITC-CSCC 2012).
[6] J. Satansup, T. Pukkalanun, W. Tangsrirat ,
2013.Electronically tunable current mode universal filter using VDTAs and grounded capacitors, in: Proceedings of the IMECS-2013.vol–II, Hong Kong, March 13–15.
[7] A. Yesil, F. Kacar, Electronically tunable resistorless mixed mode biquad, Radioengineering 22 (4) (2013) 1016– 1025.
[8] W. Mekhum, W. Jaikla, Three input single output voltage-mode multifunction filter with independent control of pole frequency and quality factor, Theor. Appl. Electric. Eng. 11 (6) (2013) 494–500.
[9] N. Herencsar, R. Sotner, J. Koton, J. Misurec, K. Vrba, New compact VM fourphase oscillator employing only single Z-copy VDTA and all grounded passive elements, Electron. Electric. Eng. 19 (10) (2013) 87–90.
[10] D. Prasad, D.R. Bhaskar, M. Srivastava, Universal current-mode biquad filter using a VDTA, Circuits Syst. 4
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[11] J. Satansup, W. Tangsrirat, Single VDTA-based current-mode electronically tunable multifunction filter, in: Proceedings of the I-SEEC 2012, Petchburi, Thailand, 2012, pp. 266– 272.
[12] S.I. Liu, C.S. Hwang, Realization of current-mode filters using single FTFN, Int. J. Electron 82 (5) (1997) 499– 502.
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