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International Conference on Service-Oriented Computing

ICSOC 2018: Service-Oriented Computing – ICSOC 2018 Workshops pp 69–79Cite as

Research and Design of CMOS Fully Differential Telescopic Operational Amplifier with Common Mode Feedback

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Part of the book series: Lecture Notes in Computer Science ((LNPSE,volume 11434))

Abstract

In the medium or low frequency cases, the performance such as the gain or bandwidth of the fully differential operational amplifier is not good. In this paper, a fully differential telescopic two-stage operational amplifier with two-stage common-mode feedback is designed by using TSMC 250 nm technology. The first stage operational amplifier is telescopic structure, while the second stage operational amplifier is common source structure. The inner structure of common-mode feedback is continuous-time common-mode feedback circuit, and the outer structure is switched capacitor CMFB structure. It has the advantages of high gain and good linearity. It overcomes the shortcomings of common mode feedback circuit in limiting the output swing. It can stabilize the DC operating point and improve the output swing effectively. Cadence Spectre simulation results show that the common mode feedback structure keeps the common mode level at 1.25 V, the open loop gain is 67.7 dB, the phase margin is 45°, and the unit gain bandwidth is 150.7 MHz under the 2.5 V supply voltage.

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Acknowledgements

This work was supported by the Natural Science Foundation of China (No.61361011), the Natural Science Foundation of Guangxi (No. 2017GXNSFAA198363), the Basic Ability Enhancement Program for Young and Middle-aged Teachers of Guangxi.

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Authors and Affiliations

  1. College of Electronic Engineering, Guangxi Normal University, Guilin, 541004, Guangxi, China

    Zhongqiu Pang, Pinqun Jiang, Shuxiang Song & Mingcan Cen

Authors
  1. Zhongqiu Pang
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  2. Pinqun Jiang
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  3. Shuxiang Song
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  4. Mingcan Cen
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Corresponding author

Correspondence to Pinqun Jiang .

Editor information

Editors and Affiliations

  1. Deakin University, Melbourne, VIC, Australia

    Xiao Liu

  2. University of Pau and Pays, Pau Cedex, France

    Michael Mrissa

  3. Fudan University, Shanghai Shi, China

    Liang Zhang

  4. LIRIS Lab, University Lyon 1, IUT, Villeurbanne Cedex, France

    Djamal Benslimane

  5. School of IT and Computer Science, University of Wollongong, Wollongong, NSW, Australia

    Aditya Ghose

  6. Harbin Institute of Technology, Harbin, China

    Zhongjie Wang

  7. Scientific and Technological Hub, Fondazione Bruno Kessler (FBK), Trento, Italy

    Antonio Bucchiarone

  8. Macquarie University, Sydney, NSW, Australia

    Wei Zhang

  9. Queen’s University, Kingston, ON, Canada

    Ying Zou

  10. Rochester Institute of Technology, Rochester, NY, USA

    Qi Yu

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Cite this paper

Pang, Z., Jiang, P., Song, S., Cen, M. (2019). Research and Design of CMOS Fully Differential Telescopic Operational Amplifier with Common Mode Feedback. In: Liu, X., et al. Service-Oriented Computing – ICSOC 2018 Workshops. ICSOC 2018. Lecture Notes in Computer Science(), vol 11434. Springer, Cham. https://doi.org/10.1007/978-3-030-17642-6_6

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  • DOI: https://doi.org/10.1007/978-3-030-17642-6_6

  • Published:

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-17641-9

  • Online ISBN: 978-3-030-17642-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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