Bindu Thakral

Design of Low Power Current Mode Square-Root Circuit

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Author(s)

Bindu Thakral ^1,*

1. Electronics and Communication Engineering Department, Ansal University, Gurgaon, India

* Corresponding author.

DOI: https://doi.org/10.5815/ijem.2015.04.03

Received: 14 Aug. 2015 / Revised: 26 Sep. 2015 / Accepted: 1 Nov. 2015 / Published: 8 Nov. 2015

Index Terms

Weak inversion, Translinear principle, Square-root, Square circuit

Abstract

Analog circuits have been viewed as a voltage dominated type of signal processing. With the advent of CMOS technology, shrinking feature size, and reduction of supply voltage a new class of circuits developed: current-mode circuits. Among current-mode circuits "Translinear circuits" is one of the important and emerging research interests for low power analog designers. It is the practical means of implementing nonlinear signal processing functions. The performance of analog circuits strongly depends upon techniques used to exploit the characteristics of the transistors. In this paper, using exponential current-voltage relationship of MOS transistor when biased in subthreshold-mode, a square-root circuit is proposed. The circuit simulations were carried on TSMC 0.18 micrometer technology using ELDO Simulator.

Cite This Paper

Bindu Thakral,"Design of Low Power Current Mode Square-Root Circuit", International Journal of Engineering and Manufacturing(IJEM), Vol.5, No.4, pp.23-29, 2015. DOI: 10.5815/ijem.2015.04.03

Reference

[1]B. Gilbert, "Translinear Circuits: A Proposed classifications," Electronics Letters, vol. 11, no.1, pp.14-16, 1975.

[2]C. A. Mead, Analog VLSI and Neural Systems. AddisonWesley: Reading, MA, 1989.

[3]C.A. Mead, "Neuromorphic electronic systems," Proceedings IEEE, vol. 78, no. 10, pp. 1629-1636, Oct. 1990.

[4]E.A. Vittoz and J. Fellrath, "CMOS analog integrated circuits based on weak inversion operation," IEEE Journal of Solid-State Circuits, vol. 12, no. 3, pp. 224-231, June 1977.

[5]E. A. Vittoz, Micropower techniques, In Y. P. Tsividis and P. Antognetti, eds., VLSI Circuits for Telecommunications, Prentice Hall: 1985.

[6]A.G. Andreou and K. A. Boahen, "Synthetic neural circuits using current domain-signal representations," Neural Computation, vol. 1, pp. 489-501, 1989.

[7]A.G. Andreon, "Synthetic neural systems using current-mode circuits," Proceedings of the IEEE 1990 International Symposium on Circuits and Systems, New Orleans, pp. 2428-2432, May 1990.

[8]A.G. Andreou, Low power analog VLSI systems for sensory information processing, in B. Sheu, Edgar Sanchez-Sinencio and M. Ismail, eds., Microsystems Technologies for Multimedia Applications: An Introduction. IEEE Press: Los Alamitos, CA, 1995.

[9]K.A. Boahen, "Retinomorphic vision systems," Proceedings ofMicroNeuro-96. IEEE Computer Society Press: Los Alamitos, CA, 1996.

[10]E. O. Doebelin, Measurement Systems: Application and Design, New York: McGraw Hill, 2004.

[11]P. E. Allen and D. R. Holberg, CMOS Analog circuit design, Holt Rinehart and Winston, Inc., 1987.

[12]J. Millman and A. Grabel, Microelectronics, New York: McGraw-Hill, 1992.

[13]I. M. Filanovsky and H. P. Baltes, Simple CMOS analog square-rooting and squaring circuits," IEEE Trans. Circuits and Systems-I, vol. 39, pp. 312-315, 1992.

[14]F.A. Khanday, C. Psychalinos, and N.A. Shah, "Universal filters of arbitrary order and type employing square-root-domain technique". Int. J. Electronics, vol. 101, no. 7, pp. 894-918, 2014.

[15]A. Kircay, "Electronically tunable current-mode square-root domain first-order multifunction filter," Int. J. Electronics, vol.101, no. 2, pp. 212-219, 2014.

[16]S.-I. Liu, \Square-rooting and vector summation circuits using current conveyors," IEE Proceedings. Circuits, Devices and Systems, vol. 142, 223226, 1995.

[17]W. Chiu, S.-I. Liu, H.-W. Tsao, and J.-J. Chen CMOS di®erential di®erence current conveyors and their applications," IEE Proceedings. Circuits, Devices and Systems, vol. 143, 91-96, 1996. 1151-1159.

[18]E. Seevinck and R. J.Wiegerink, "Generalized translinear circuit principle," IEEE Journal Solid-State Circuits, vol. 26, no. 8, pp. 1098–1102,Aug.1991.

[19]E. Vittoz and J. Fellrath, "CMOS analog integrated circuit based on weak-inversion operation," IEEE Journal Solid-State Circuits, vol. 12, no. 3, pp. 224-231, Jun. 1977.

[20]B. A. Minch, "MOS Translinear Principle for All Inversion Levels," IEEE Journal. Circuits and Systems, vol. 55, no. 2, pp. 121-125, 2008.

International Journal of Engineering and Manufacturing (IJEM)