Kasemsuwan, Varakorn

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Preferred name
Kasemsuwan, Varakorn
Alternative Name
Kasemsuwan, V.
Kasemsuwan, Varakom
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Email
varakorn.ka@kmitl.ac.th

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    Item type:Publication,
    Feedforward bulk-driven class AB fully-differential second-generation current conveyor (FDCCII)
    (2014-01-01)
    Thongleam, Thawatchai
    ;
    Kasemsuwan, Varakorn
    In this paper, a feedforward bulk-driven class AB fully-differential second-generation current conveyer (FDCCII) is presented. Bulk-driven differential pair is employed for the input stage allowing the FDCCII to operate with rail-to-rail operation. Feedfoward technique is also incorporated into input stage to increase the DC gain and minimize the common mode gain. The circuit performance is verified using HSPICE in 0.18 μm CMOS technology. The simulation results show rail-to-rail input and output swings. The DC voltage transfer characteristic between ports Y and X and DC current transfer characteristic between ports X and Z shows good linearity. The bandwidths show 25.7 MHz (V<inf>X</inf>/V<inf>Y</inf>), 30 MHz (I<inf>Z</inf>/I<inf>X</inf>), respectively. The power dissipation is 267.5 μW. © (2014) Trans Tech Publications, Switzerland.
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    A 0.5 V Quasi-Floating-Gate (QFG) inverter-based class-AB gain-bandwidth independent amplifier
    (2011-12-01)
    Suadet, Apirak
    ;
    Kasemsuwan, Varakorn
    This paper presents a 0.5 V QFG inverter-based class-AB gain-bandwidth independent amplifier. The circuit employs positive feedback to enhance the input impedance, and feed-forward technique to suppress the common-mode gain. The circuit is designed using 0.18 μm CMOS technology under 0.5 V supply. The simulation results show nearly constant bandwidth for various gain, rail-to-rail input/output swing, suppressed common-mode response, and good linearity. The power dissipation is 275 μW. © 2011 IEEE.