Abstract
A new CMOS realization of the differential current voltage conveyor (DCVC) is introduced. The properties of the DCVC are shown to be suitable for very large-scale integration applications employing metal oxide semiconductor transistors operating in an ohmic region. A novel voltage-mode integrator is introduced. Detailed analysis of the parasitic capacitances is included. Voltage-mode continuous-time filters that benefit from the current processing capabilities at the input terminals of the DCVC are presented. Self-compensation of the proposed circuits is also presented. The effectiveness of the proposed circuits is demonstrated through HSPICE simulations based on the AMI 1.2μm N-well level 3 parameters.
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References
C. Acar and S. Ozguz, A new versatile building block: Current differencing buffered amplifier suitable for analog signal processing,Microelectron. J., 30, 157–160, 1999.
Budak and D. M. Petrela, Frequency limitations of active filters using operational amplifiers,IEEE Trans. Circuit Theor., CT-19, 322–328, 1972.
J. Chen, H. Tsao, S. Liu, and W. Chui, Parasitic-capacitance-insensitive current-mode filters using operational transresistance amplifiers,IEE Proc. Circuits Devices Syst., 142, 186–192, 1995.
J. Choma, Communication circuits: Societal philosophies and evolving roles,IEEE Circuits Syst. Society Newsletter, 9, 1998.
Z. Czarnul, Novel MOS resistive circuit for synthesis of fully integrated continuous-time filters,IEEE Trans. Circuits Syst., CAS-33, 718–721, 1986.
M. H. Eltawil and A. M. Soliman, New precise SPICE macromodels for the current-feedback operational amplifier,Microelectron. J., 30, 841–849, 1999.
H. Elwan and A. Soliman, CMOS differential current conveyors and applications for analog VLSI,Analog Integrated Circuits Signal Process., 11, 35–45, 1996.
Linear Products Data Book, Analog Devices, Norwood, MA, 1990.
S. Ozguz, A. Toker, and C. Acar, Current mode continuous-time fully integrated universal filter using CDBA,Electron. Lett., 35, 97–98, 1999.
K. Salama and A. Soliman, Novel MOS-C qadrature oscillator using the differential current voltage conveyor, 42nd Midwest Symposium Circuits and Systems, 279–282, 1999.
C. Toumazou, F. Lingey, and D. Haigh,Analogue IC Design: the Current Mode Approach, Peter Peregrinus, London, 1990.
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Salama, K.N., Elwan, H.O. & Soliman, A.M. Parasitic-capacitance-insensitive voltage-mode mosfet-C filters using differential current voltage conveyor. Circuits Systems and Signal Process 20, 11–26 (2001). https://doi.org/10.1007/BF01204919
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DOI: https://doi.org/10.1007/BF01204919