A Novel Approach to Enhance the Gain-Bandwidth and Slew Rate in CMOS Amplifiers Using External Current Recycling.

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Title: A Novel Approach to Enhance the Gain-Bandwidth and Slew Rate in CMOS Amplifiers Using External Current Recycling.
Authors: Tang, Shijindian1 (AUTHOR) tsjd@email.cugb.edu.cn, Zhao, Xiao1 (AUTHOR) zhaoxiao@cugb.edu.cn, Jia, Dawei1 (AUTHOR) jiadawei@email.cugb.edu.cn
Source: Circuits, Systems & Signal Processing. Nov2025, Vol. 44 Issue 11, p8007-8026. 20p.
Subjects: CMOS amplifiers, Electronic amplifiers, Signal integrity (Electronics)
Abstract: An external nonlinear current recycling folded cascode amplifier with an improved gain-bandwidth and slew rate is proposed in this paper. The proposed amplifier employs a flipped voltage follower to form the adaptive biasing input stage. It uses a current recycling method and two nonlinear current mirrors to recycle the boosting currents from the input stage from the outside. This makes the gain-bandwidth and slew rate much better than those of a regular folded cascode amplifier. To demonstrate the enhanced performance of the proposed amplifier, we designed both the proposed amplifier and the traditional folded cascode amplifier in the 180 nm CMOS process. The simulation results demonstrate that the proposed amplifier achieves a 2.4-fold gain-bandwidth and 14-fold slew rate enhancement with negligible extra power consumption compared with its conventional counterpart. [ABSTRACT FROM AUTHOR]
Copyright of Circuits, Systems & Signal Processing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A Novel Approach to Enhance the Gain-Bandwidth and Slew Rate in CMOS Amplifiers Using External Current Recycling.
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  Data: <searchLink fieldCode="AR" term="%22Tang%2C+Shijindian%22">Tang, Shijindian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tsjd@email.cugb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xiao%22">Zhao, Xiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhaoxiao@cugb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Jia%2C+Dawei%22">Jia, Dawei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jiadawei@email.cugb.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Circuits%2C+Systems+%26+Signal+Processing%22">Circuits, Systems & Signal Processing</searchLink>. Nov2025, Vol. 44 Issue 11, p8007-8026. 20p.
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  Data: <searchLink fieldCode="DE" term="%22CMOS+amplifiers%22">CMOS amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+amplifiers%22">Electronic amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+integrity+%28Electronics%29%22">Signal integrity (Electronics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: An external nonlinear current recycling folded cascode amplifier with an improved gain-bandwidth and slew rate is proposed in this paper. The proposed amplifier employs a flipped voltage follower to form the adaptive biasing input stage. It uses a current recycling method and two nonlinear current mirrors to recycle the boosting currents from the input stage from the outside. This makes the gain-bandwidth and slew rate much better than those of a regular folded cascode amplifier. To demonstrate the enhanced performance of the proposed amplifier, we designed both the proposed amplifier and the traditional folded cascode amplifier in the 180 nm CMOS process. The simulation results demonstrate that the proposed amplifier achieves a 2.4-fold gain-bandwidth and 14-fold slew rate enhancement with negligible extra power consumption compared with its conventional counterpart. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Circuits, Systems & Signal Processing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00034-025-03180-z
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        Text: English
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      – SubjectFull: CMOS amplifiers
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      – SubjectFull: Electronic amplifiers
        Type: general
      – SubjectFull: Signal integrity (Electronics)
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      – TitleFull: A Novel Approach to Enhance the Gain-Bandwidth and Slew Rate in CMOS Amplifiers Using External Current Recycling.
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              Text: Nov2025
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