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Access type: UnknownSubject: search.filters.subject.Integrated circuits

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    New electronically tunable current-mode universal biquad filter using translinear current conveyors
    (2010-05-01)
    Kumngern, Montree
    ;
    Jongchanachavawat, Wirote
    ;
    Dejhan, Kobchai
    In this study, a new electronically tunable current-mode universal filter with two inputs and two outputs employing one translinear current conveyor, one translinear current conveyor with controlled current gain and two grounded capacitors is presented. The proposed circuit offers the following attractive features: realisation of low-pass, band-pass, high-pass, band-stop and all-pass current responses from the same configuration; employment of the minimum active and passive components; no requirement of component matching conditions; independent current-control of the parameters natural frequency (wo) and quality factor (Q); low active and passive sensitivities; and high impedance output. The characteristics of the proposed circuit are simulated using PSPICE to confirm the theory. © 2010 Taylor & Francis.
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    A simple rail-to-rail CMOS voltage follower
    (2009-01-27)
    Kasemsuwan, Varakorn
    ;
    Nakhlo, Weerachai
    Purpose - The paper aims to present a simple rail-to-rail CMOS voltage follower. Design/methodology/approach - The circuit is developed based on a complementary source follower with a common-source output stage. The circuit is designed using a 0.13 μm CMOS technology, and operates under the supply voltage of 1.5 V. HSPICE is used to verify the circuit performance. Findings - The simulations show output voltage swing of ±0.6 V (300 Ω load) with the total harmonic distortion of 0.55 per cent at the operating frequency of 3 MHz. The bandwidth and power dissipation are 657 MHz and 405 μW, respectively. Originality/value - A simple rail-to-rail CMOS voltage follower is presented. © Emerald Group Publishing Limited.
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    Cmos floating voltage-controlled negative resistor
    (1992-07-16)
    Surakampontorn, W.
    A circuit technique for realising a floating voltage-controlled negative resistor that is suitable for fabrication in CMOS technology is presented. The negative resistor action is achieved through nonlinearity cancellation of the currents of MOS transistors in saturation. © 1992, The Institution of Electrical Engineers. All rights reserved.
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    Integrable Electronically Tunable Current Conveyors
    (1988-01-01)
    Surakampontorn, W.
    ;
    Thitimajshima, P.
    A generalised current conveyor, termed an electronically tunable second-generation current conveyor (ECCII), whose current-transfer ratio can be varied by electronic means, is introduced. A method is proposed for realising ECCII in monolithic integrated form providing both a positive and a negative ECCII in the same circuit. Experimental and simulation results demonstrating the circuit performance are included. Some simple applications which show that their circuit property can be varied by electronic means are also presented. © 1988, The Institution of Electrical Engineers. All rights reserved.