Nothing Special   »   [go: up one dir, main page]

Skip to main content

Performance of CMOS and Floating-Gate Full-Adders Circuits at Subthreshold Power Supply

  • Conference paper
Integrated Circuit and System Design. Power and Timing Modeling, Optimization and Simulation (PATMOS 2007)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 4644))

Abstract

To reduce power consumption in electronic designs, new techniques for circuit design must always be considered. Float ing-gate MOS (FGMOS) is one of those techniques and has previously shown poten tially better performance than standard static CMOS circuits for ultra-low power designs. One reason for this is because FGMOS only requires a few transis tors per gate and still retain a large fan-in. Another reason is that CMOS circuits becomes very slow in subthreshold region and are not suitable in many applications while FGMOS can have a shift in threshold voltage to increase speed performance. This paper investigates how the performance of an FGMOS full-adder circuit will compare with two common CMOS full-adder designs. Simulations in a 120 nm process shows that FGMOS can have up to 9 times better EDP performance at 250 mV. The simulations also show that the FGMOS full-adder is 32 times faster and have two orders of magnitude higher power consumption than that for CMOS.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Similar content being viewed by others

References

  1. Shibata, T., Ohmni, T.: A Functional MOS Transistor Featuring Gate-Level Weighted Sum and Threshold Operations. IEEE Transactions on Electron Devices 39 (1992)

    Google Scholar 

  2. Alfredsson, J., Aunet, S., Oelmann, B.: Basic speed and power properties of digital floating-gate circuits operating in subthreshold. In: IFIP VLSI-SOC 2005, Proc. of IFIP International Conference on Very Large Scale Integration, October 2005, Australia (2005)

    Google Scholar 

  3. Hasler, P., Lande, T.S.: Overview of floating-gate devices, circuits and systems. IEEE Transactions on Circuits and Systems - II: Analog and Digital Signal Processing 48(1) (January 2001)

    Google Scholar 

  4. Stan, M.R.: Low-power CMOS with subvolt supply voltages. IEEE Transactions on VLSI Systems 9(2) (April 2001)

    Google Scholar 

  5. Rodríguez-Villegas, E., Huertas, G., Avedillo, M.J., Quintana, J.M., Rueda, A.: A Practical Floating-Gate Muller-C Element Using vMOS Thershold Gates. IEEE Transactions on Cirucits and Systems-II: Analog and Digital Signal Processing 48(1) (January 2001)

    Google Scholar 

  6. Aunet, S., Berg, Y., Ytterdal, T., Næss, Ø., Sæther, T.: A method for simulation of floating-gate UV-programmable circuits with application to three new 2-MOSFET digital circuits. In: The 8th IEEE International conference on Electronics, Circuits and Systems, 2001, vol. 2, pp. 1035–1038 (2001)

    Google Scholar 

  7. Rahimi, K., Diorio, C., Hernandez, C., Brockhausen, M.D.: A simulation model for floating-gate MOS synapse transistors. In: ISCAS 2002, Proc. of the 2002 IEEE International Sympposium on Circuits and Systems, May 2002, vol. 2, pp. 532–535 (2002)

    Google Scholar 

  8. Ramírez-Angulo, J., López-Martín, A.J., González Carvajal, R., Muñoz Chavero, F.: Very low-voltage analog signal processiing based on quasi-floating gate transistors. IEEE Journal of Solid-State Circuits 39(3), 434–442 (2004)

    Article  Google Scholar 

  9. Schrom, G., Selberherr, S.: Ultra-Low-Power CMOS Technologies (Invited paper). In: Proc. of International Semiconductor Conference, vol. 1, pp. 237–246 (1996)

    Google Scholar 

  10. Aunet, S.: Real-time reconfigurable devices implemented in UV-light programmable floating-gate CMOS. Ph.D. Dissertation 2002:52, Norwegian University of Science and Technology, Trondheim, Norway (2002)

    Google Scholar 

  11. Rabaey, J.M.: Digital Integrated Cirucuits - A design perspective, pp. 188–193. Prentice Hall, Englewood Cliffs (2003)

    Google Scholar 

  12. Alioto, M., Palumbo, G.: Impact of Supply Voltage Variations on Full Adder Delay: Analysis and Comparison. IEEE Transactions on very large scale integration (VLSI) systems 14(12) (December 2006)

    Google Scholar 

  13. Granhaug, K., Aunet, S.: Six Subthreshold Full Adder Cells characterized in 90 nm CMOS technology. Design and Diagnostics of Electronic Circuits and Systems, 25–30 (April 2006)

    Google Scholar 

  14. Alfredsson, J., Aunet, S., Oelmann, B.: Small Fan-in Floating-gate Circuits with Application to an Improved Adder Structure. In: Proc. of 20th international Conference on VLSI design, January 2007, Bangalore, India (2007)

    Google Scholar 

  15. Shams, A.M., Bayoumi, M.A.: A Framework for Fair Performance Evaluation of 1-bit Full Adder Cells. In: 42nd Midwest Symposium on Circuits and Systems, vol. 1, pp. 6–9 (1999)

    Google Scholar 

  16. Seo, I., Fox, R.M.: Comparison of Quasi-/Pseudo-Floating Gate Techniques. In: Proceedings of the International Symposium on Circuits and Systems, ISCAS 2004, May 2004, vol. 1, pp. 365–368 (2004)

    Google Scholar 

  17. Alfredsson, J., Oelmann, B.: Influence of Refresh Circuits Connected to Low Power Digital Quasi-Floating gate Designs. In: Proceedings of the 13th IEEE International Conference on Electronics, Circuits and Systems (ICECS 2006), December 2006, Nice, France, (2006)

    Google Scholar 

  18. International Technology Roadmap for Semiconductors, Webpage documents, http://public.itrs.net

  19. Lande, T.S., Wisland, D.T., Sæther, T., Berg, Y.: Flogic – Floating Gate Logic for Low-Power Operation. In: Proceedings of International Conferens on Electronics Circuits and Systems (ICECS 1996), April 1996, vol. 2, pp. 1041–1044 (1996)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Nadine Azémard Lars Svensson

Rights and permissions

Reprints and permissions

Copyright information

© 2007 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Alfredsson, J., Aunet, S. (2007). Performance of CMOS and Floating-Gate Full-Adders Circuits at Subthreshold Power Supply. In: Azémard, N., Svensson, L. (eds) Integrated Circuit and System Design. Power and Timing Modeling, Optimization and Simulation. PATMOS 2007. Lecture Notes in Computer Science, vol 4644. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74442-9_52

Download citation

  • DOI: https://doi.org/10.1007/978-3-540-74442-9_52

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-74441-2

  • Online ISBN: 978-3-540-74442-9

  • eBook Packages: Computer ScienceComputer Science (R0)

Publish with us

Policies and ethics