In this paper, a new, differential pair based, low-voltage, high performance and wideband CMOS first generation current conveyor (CCI) is proposed. The proposed CCI has high voltage swings on ports X and Y and very low equivalent impedance on port X due to super source follower configuration. It also has high voltage swings (close to supply voltages) on input and output ports and wideband current and voltage transfer ratios. Furthermore, two novel grounded inductance simulator circuits are proposed as application examples. Using HSpice, it is shown that the simulation results of the proposed CCI and also of the presented inductance simulators are in very good agreement with the expected ones
A new, self-biasing, di®erential pair-based and high performance CMOS CCII circuit is proposed which uses no additional biasing voltage or current sources other than the two supply rails. The proposed circuit has high voltage swings on ports X and Y, very low equivalent impedance on port X, high equivalent impedances on ports Y and Z and also wideband voltage and current transfer ratios. The noise analysis of the proposed CCII circuit is studied. Input referred noise voltage at high impedance port Y and input referred noise current at low impedance port X are obtained to form the noise model. Some¯lter circuits are selected from the literature and their noise comparisons are performed. It is shown that the noise values can di®er greatly even though the¯lter circuits or the passive element values are identical.
In this work, a wideband and high-performance CMOS implementation of 2nd-generation current conveyor (CCII) is proposed. The proposed circuit is composed of a high performance voltage follower stage which is based on di®erential pairs to provide high voltage swings on input and output ports and a current follower stage. It is shown that the proposed voltage follower stage can be used to implement high performance 1st and 3rd-generation current conveyors (CCI and CCIII, respectively) that have very small equivalent impedances on ports X, high equivalent impedances on ports Y and Z and also high-valued voltage and current transfer bandwidths. 2nd and 3rd order¯lter circuits as well as a half-wave recti¯er circuit are given to show the performance and usefulness of the proposed current conveyor circuits. The simulation and experimental results are given to verify the theoretical analyses.
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