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A new CMOS electronically tunable current conveyor and its application to current-mode filters

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3 Author(s)
S. Minaei ; Dept. of Electron. & Commun. Eng, Dogus Univ., Istanbul, Turkey ; O. K. Sayin ; H. Kuntman

In this paper, a new CMOS high-performance electronically tunable second-generation current conveyor (ECCII) is presented. The current gain of the proposed ECCII can be controlled electronically by adjusting the ratio of dc bias currents of the ECCII. The output terminal of the proposed ECCII has high impedance, which enables easy cascadability. Also, as an application, the proposed ECCII is used for realizing a universal current-mode filter. The filter realizes low-pass, bandpass, and high-pass responses simultaneously. The low-pass response is obtained at high impedance output and its gain can be independently tuned by changing the current gain of the relevant CC. SPICE simulation results using TSMC 0.35-μm CMOS process model shows excellent performance for the proposed ECCII. The proposed circuit consumes average power of 6.6 mW using ±1.5-V supply voltages.

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IEEE Transactions on Circuits and Systems I: Regular Papers  (Volume:53 ,  Issue: 7 )