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A High Speed CMOS Current Comparator in 90 nm CMOS Process Technology

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on Microelectronics, Circuits and Systems © 2014 by IJCA Journal

IJCA Proceedings on International Conference

MICRO - Number 2 Year of Publication: 2014

Adyasha Rath

Authors:

Sushanta K. Mandal Subhrajyoti Das Sweta Padma Dash

{bibtex}MICRO1811.bib{/bibtex}

Abstract In this paper a current mode comparator is presented, more aptly can be called as the "Current Comparator". The proposed circuit consists of a current differencing stage

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A High Speed CMOS Current Comparator in 90 nm CMOS Process Technology

which accepts two current inputs where one is the reference current and the other is the input current. The comparator stage outputs a rail-to-rail voltage depending on the difference of the two currents. Simulation of the proposed design is carried out in Cadence using EDA tool in 90nm technology. The operating speed of the current comparator was found to be 1. 82GHz with an average power dissipation of 122µW. The high speed operation was confirmed by the transient analysis results in which the delay was found to be 0. 55ns at an input current difference of ±1µA.

Refer

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- D. A. Freitas and K. W. Current, "A CMOS current comparator circuit," Electronics Letters, v. 19. no. 17, p. 695-697. Aug. 1983. - H. Traff, "Novel Approach to High Speed CMOS Current Comparators", IEEE Proceedings - Electronic Letters, vol. 28, No. 3, 1992. - K. W. Current,"Current-mode CMOS multiple-valued logic circuits", IEEE J. Solid State Circuits, vol. 29, no. 2, pp. 95-107, Feb. 1994. - A. T. K. Tang and C. Toumazou, "High performance CMOS current comparator", Electronic Letters, vol. 30, pp. 5–6, 1994. - Byung-moo Min and Soo-won Kim, "High performance CMOS current comparator using resistive feedback network", IEEE Proceedings - Electronic Letters, Pages. 2074-2076, vol. 34, Issue. 22, 1998. - Lu Chen, Bingxue Shi, and Chun Lu, "A High Speed/Power Ratio ContinuousTime CMOS Current Comparator", IEEE Proceedings – Electronics, Circuits and Systems, ICECS-2000, Pages. 883-886, Vol. 2, Dec - 2000. - D. Banks, and C. Toumazou, "Low-power high-speed current comparator design", IEEE Proceedings - Electronic Letters, vol. 44, No. 3, 2008. - Tang, X. ; Pun, K. -P. , "High-performance CMOS current comparator," Electronics Letters, vol. 45, no. 20, pp. 1007-1009, September 24 2009. - C. B. Kushwah, D. Soni, and R. S. Gamad, "New Design of CMOS Current Comparator", IEEE Proceedings – ICETET -2009, Pages. 125-129, Dec-2009. - Chun Wei Lin,and Sheng Feng Lin, "Low Input Impedance Current Comparator Using in Pulse-Width Modulation ", IEEE Proceedings – ICCE-2010,Pages. 127-130. - Soheil Ziabakhsh, Hosein Alavi-Rad, Mohammad Alavi-Rad and Mohammad Mortazavi, " The Design of a Low-Power High-Speed Current Comparator in 0. 35µm CMOS Technology ",IEEE Proceedings, 2009. - Sridhar R. , Pandey N. , Bhatia V. , Bhattacharyya A. , "On Improving the performance of Traff's Comparator" , 2012 IEEE 5th India International Conference on Power Electronics (IICPE), 2012. Computer Science

Index Terms

Circuits And Systems

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A High Speed CMOS Current Comparator in 90 nm CMOS Process Technology

Keywords

Current Comparator Input Current Current Mode Circuits Positive Feedback Reference Current

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