A Single Capacitor Bootstrapped Power Efficient CMOS Driver Jos C' Garca, Juan A' MontielNelson Inst

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A Single Capacitor Bootstrapped Power
Efficient CMOS DriverJosé C. García, Juan A.
MontielNelsonInstitute for Applied
Microelectronics,Department of Electronic
Engineering and Automation,University of Las
Palmas de Gran Canaria,E35017 Las Palmas de
Gran Canaria, Spain.

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OUTLINE

• ABSTRACT
• INTRODUCTION
• FDRIVER CIRCUIT OPERATION
• COMPARISON AND DISCUSSION

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ABSTRACT

• A high speed and low power driver employing a
  single bootstrap capacitor is reported.
• improvement in the power dissipation, 15 higher
  speed, and 8.7 reduction in the active area

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INTRODUCTION

• Most bootstrap circuits are based on BiCMOS
  technology 1 3. But BiCMOS circuit design
  techniques are no longer possible.
• With the widespread use of low voltage and low
  power CMOS circuits
• CMOS bootstrap circuits reported in 4 9
  require two bootstrap capacitors
• In this paper, we provide a new bootstrap driver
  circuit termed , the Fdriver

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CMOS inverting Fdriver
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Equivalent inverting Fdriver when input is high
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Equivalent inverting Fdriver when input is low
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Equivalent inverting Fdriver during input
transition from high to low
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Equivalent inverting Fdriver during input
transition from low to high
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Transient waveforms of CMOS inverting Fdriver
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Propagation delay time versus output load
capacitance
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REFERENCES

• 1 C. Suriyaammaranon, K. Dejhan, F.
  Cheevasuvit, C. Soonyeekan A high speed and low
  voltaje BiCMOS tristate buffer with positive and
  negative charge pump, In Proce. of IEEE Int.
  Conf. On Circuits and Systems, 2000, vol.1, 2000,
  pp. 1114
• ROFAIL, s.s., and YEO, K.s. Low-voltage
  low-power digital BiCMOS circuits Circuit
  design, comparative study, and sensitivity
  analysis (Prentice Hall, Englewood Cliffs, NJ,
  1999)
• Elizabeth J. Brauer, and Pradeep Elamanchili A
  fullswing bootstrapped BiCMOS buffer, In Proce.
  of IEEE Int. Conf. On Circuits and Systems, 1997,
  pp. 813
• M. Waltari, and K. Halonen Bootstrapped switch
  without bulk effect in standard CMOS technology,
  Electron. Lett., vol. 38, no. 12, 2002, pp.
  555557.
• J. H. Lou and J. B. Kuo, A 1.5-V fullswing
  bootstrapped CMOS large capacitiveload driver
  circuit suitable for lowvoltage CMOS VLSI, IEEE
  J. SolidState Circuits, vol. 32, no. 1, pp.
  119121, Jan. 1997.
• Law ChongFatt, Yeo KiatSeng and Samir S.
  Rofail Sub1V bootstrapped CMOS driver for
  gigascaleintegration era, Electron Lett., vol.
  35, no. 5, 1999, pp. 392393
• Kiat-Seng Yeo, Jian-Guo Ma, and Manh-Anh Do
  Ultra low voltagebootstrapped CMOS driver for
  high performance applications,Electron. Lett.,
  vol. 36, no. 8, 2000, pp. 706708
• CHEN, J.H.T., and KUO, J.B Ultralowvoltage
  SOI CMOS inverting driver circuit using effective
  charge pump based on bootstrap technique,
  Electron. Lett., vol. 39, no. 2, 2003, pp.
  183185.

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