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Access type: UnknownSubject: search.filters.subject.Current mode circuit

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    Low-voltage NMOS-based current differencing buffered amplifier and its application to current-mode ladder filter design
    (2006-11-01)
    Tangsrirat, W.
    ;
    Klahan, K.
    ;
    Dumawipata, T.
    ;
    Surakampontorn, W.
    An integratable circuit technique to realize a low-voltage current differencing buffered amplifier (CDBA) is introduced. The realization scheme is through the modification of a low-input resistance CCII+ and the proposed CDBA can operate with the minimum supply voltage of ±1.25∈V. In order that the signal path consists of only NMOS transistors, a negative current mirror using NMOS transistors is employed. With standard 0.5∈μm CMOS process parameters, PSPICE simulation results show that the proposed CDBA provides the terminal resistance of , , and the -3∈dB bandwidth of about 500∈MHz. Application examples employing the proposed CDBA as active elements in the leapfrog simulation of current-mode ladder filters are also included.
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    A novel high Q-bandpass filter employing a few grounded passive components
    (2005-12-01)
    Tongkulboriboon, Seangrawee
    ;
    Petchakit, Wijittra
    ;
    Pawarangkoon, Prajuab
    ;
    Kiranon, Wiwat
    This paper proposes a novel current mode high Q bandpass filter with electronically tunable features based on second generation current controlled conveyor (CCCII). The configuration of the proposed circuit Is simple and very attractive for monolithic circuits owing to using a few grounded passive components. The center frequency and pole-Q can be Independently adjusted via dc bias currents of CCCIIs. The proposed filter Is verified by SPICE simulations and the results are given In order to confirm the validity of the proposed circuits. © 2005 IEEE.