Low-Voltage Power-Efficient Amplifiers for Emerging Applications

  • A. López-Martin
  • R.G. Carvajal
  • E. López-Morillo
  • L. Acosta
  • T. S´nchez-Rodriguez
  • C. Rubia-Marcos
  • J. Ramírez-Angulo

Abstract

Various design techniques aimed to obtain low-voltage power-efficient amplifiers are presented. Power efficiency is achieved by employing class-AB stages with high current efficiency based on these techniques. The use of resistive local common-mode feedback and quasi-floating gate transistors is covered in detail. Some applications of the amplifiers designed using these techniques are included.

Keywords

Attenuation Expense Settling Polysilicon Patent 6163176 

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References

  1. 1.
    K. de Langen and J.H. Huijsing, “Compact low-voltage power-efficient operational amplifier cells for VLSI,” IEEE JSSC, Vol. 33, No. 10, October 1998, pp. 1482–1496.Google Scholar
  2. 2.
    R. Harjani, R. Heineke, and F. Wang, “An integrated low-voltage class AB CMOS OTA,” IEEE JSSC, Vol. 34, No. 2, Feb. 1999, pp. 134–142.Google Scholar
  3. 3.
    A.J. Lopez-Martin, S. Baswa, J. Ramirez-Angulo, and R.G. Carvajal, “Low-voltage super class AB CMOS OTA cells with very high slew rate and power efficiency,” IEEE JSSC, Vol. 40, May 2005, pp. 1068–1077.Google Scholar
  4. 4.
    J. Ramirez-Angulo and M. Holmes, “Simple technique using local CMFB to enhance slew rate and bandwidth of one-stage CMOS op-amps,” Electronics Letters, Vol. 38, No. 23, Nov. 2002, pp. 1409–1411.Google Scholar
  5. 5.
    V. Peluso, P. Vancorenland, M. Steyaert, and W. Sansen, “900 mV differential class AB OTA for switched opamp applications,” Electronics Letters, Vol. 33, No. 17, August 1997, pp. 1455–1456.Google Scholar
  6. 6.
    S. Baswa, A.J. Lopez-Martin, J. Ramirez-Angulo and R.G. Carvajal, “Low-voltage micropower super class AB CMOS OTA,” Electronics Letters, Vol. 40, No. 4, Feb. 2004, pp. 216–217.Google Scholar
  7. 7.
    R.G. Carvajal, J. Ramirez-Angulo, A.J. Lopez-Martin, A. Torralba, J. Gal´n, A. Carlosena, and F. Muñoz, “The Flipped Voltage Follower: a useful cell for low-voltage low-power circuit design,” IEEE TCAS-I, Vol. 52, No. 7, July 2005, pp. 1276–1291.Google Scholar
  8. 8.
    S. Baswa, A.J. Lopez-Martin, R.G. Carvajal, and J. Ramirez-Angulo, “Low-voltage power-efficient adaptive biasing for CMOS amplifiers and buffers,” Electronics Letters, Vol. 40, No. 4, Feb. 2004, pp. 217–219.Google Scholar
  9. 9.
    A.J. Lopez-Martin, C.A. De La Cruz, X. Ugalde, R.G. Carvajal, and J. Ramirez-Angulo, “Micropower CMOS S&H circuit for Ambient Intelligence applications,” Electronics Letters, Aug. 2005, pp. 935–936.Google Scholar
  10. 10.
    A. Baschirotto and G. Frattini, “AC-coupled driver with wide output dynamic range,” U.S. Patent 6163176, Dec. 19, 2000.Google Scholar
  11. 11.
    J. Ramirez-Angulo, A.J. Lopez-Martin, R.G. Carvajal, and F.M. Chavero, “Very low-voltage analog signal processing based on quasi-floating gate transistors,”, IEEE JSSC, Vol. 39, No. 3, Mar. 2004, pp. 434–442.Google Scholar
  12. 12.
    J. Ramirez-Angulo, R.G. Carvajal, J.A. Galan, and A. Lopez-Martin, “A free but efficient low-voltage class-AB two-stage operational amplifier,” IEEE TCAS-II, Vol. 53, No. 7, July 2006, pp. 568–571.Google Scholar
  13. 13.
    E.M. Cherry and D.E. Hooper, “The design of wideband transistor feedback amplifiers,” Proc. IEE, Vol. 110, Feb. 1963, pp. 375–389.Google Scholar
  14. 14.
    F. Munoz, J. Ramirez-Angulo, A. Lopez-Martin, R. G. Carvajal, A. Torralba, B. Palomo, and M. Kachare, “Analogue switch for very low-voltage applications”, Electron. Letters, Vol. 39, No. 9, May 2003, pp. 701–702.Google Scholar
  15. 15.
    A. Baschirotto and G. Frattini, “AC-coupled driver with wide output dynamic range,” U.S. Patent 6163176, Dec. 19, 2000.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • A. López-Martin
    • 1
  • R.G. Carvajal
  • E. López-Morillo
  • L. Acosta
  • T. S´nchez-Rodriguez
  • C. Rubia-Marcos
  • J. Ramírez-Angulo
  1. 1.Department Electrical & Electronic Engineering Public University of NavarraSpain

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