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Wide Dynamic Range CMOS Pseudo-differential Current Conveyors: CMOS Realizations and Applications

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Abstract

This paper presents two new CMOS realization circuits of the pseudo-differential current conveyor (PDCC) in which the second realization is a modified version of the first one. The modified PDCC has a wide dynamic input and output ranges with low distortion. The PDCC CMOS circuits are formed from two stages, input stage and output stage, and operating under a supply voltage of ±1.5 V. The input stage of the PDCC is realized using two wide linear range transconductors, and the output stage consists of a class AB push-pull network, which guarantees high current driving capability and low standby current. The first realization of PDCC exhibits dynamic input range of ±1.4 V with a total standby power dissipation of 4.08 mW, while the second realization of the PDCC exhibits a wide dynamic input range of ±2.1 V with a total standby power dissipation of 3.68 mW. The PDCC is used to realize mixed-mode fully differential VGA and a differential-mode bandpass filter. PSPICE simulations of the proposed PDCC and its based applications are given using 0.25-μm CMOS technology from TMSC MOSIS.

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Authors and Affiliations

  1. Electrical and Computer Engineering Dept., Sharjah University, Sharjah University City, Sharjah, 27272, United Arab Emirates

    Soliman A. Mahmoud

  2. Electrical Engineering Dept., Fayoum University, Fayoum, Egypt

    Soliman A. Mahmoud

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  1. Soliman A. Mahmoud
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Correspondence to Soliman A. Mahmoud.

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Mahmoud, S.A. Wide Dynamic Range CMOS Pseudo-differential Current Conveyors: CMOS Realizations and Applications. Circuits Syst Signal Process 32, 477–497 (2013). https://doi.org/10.1007/s00034-012-9478-y

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  • DOI: https://doi.org/10.1007/s00034-012-9478-y

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