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Gain Enhanced Miller Compensated Operational Amplifier.

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Title: Gain Enhanced Miller Compensated Operational Amplifier.
Authors: Duhan, Komal1 (AUTHOR) komal.phdece@pec.edu.in, Prakash, Dr. Neelam Rup1 (AUTHOR), Kaur, Dr. Jasbir1 (AUTHOR), Munjal, Sameeksha1 (AUTHOR)
Source: Semiconductors. Jul2025, Vol. 59 Issue 7, p701-710. 10p.
Subjects: Operational amplifiers, Field-effect transistors, Voltage references, Alternating currents, Metal oxide semiconductor field-effect transistors
Abstract: The paper presents a gain-enhanced operational amplifier (Op-Amp) that offers both high bandwidth and phase margin. To enhance the phase margin, a Miller compensation technique incorporating a branch with a resistor and a capacitor connected in series has been employed. The cascoding of Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFET) has been done to raise the output impedance, thus increasing the Op-Amp's gain. An Alternating Current (AC) analysis has been conducted to assess parameters such as unity-gain frequency, gain, Phase Margin (PM), and gain-bandwidth product. Utilizing an input voltage of 1.8 V and a 0.75 pF compensation capacitor, a gain of 104.1 dB and a PM of 73.78 degrees were achieved. This high-gain cascoded operational amplifier is suitable for applications in bandgap voltage references and filters. [ABSTRACT FROM AUTHOR]
Copyright of Semiconductors 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: <searchLink fieldCode="DE" term="%22Operational+amplifiers%22">Operational amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Field-effect+transistors%22">Field-effect transistors</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage+references%22">Voltage references</searchLink><br /><searchLink fieldCode="DE" term="%22Alternating+currents%22">Alternating currents</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+oxide+semiconductor+field-effect+transistors%22">Metal oxide semiconductor field-effect transistors</searchLink>
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  Data: The paper presents a gain-enhanced operational amplifier (Op-Amp) that offers both high bandwidth and phase margin. To enhance the phase margin, a Miller compensation technique incorporating a branch with a resistor and a capacitor connected in series has been employed. The cascoding of Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFET) has been done to raise the output impedance, thus increasing the Op-Amp's gain. An Alternating Current (AC) analysis has been conducted to assess parameters such as unity-gain frequency, gain, Phase Margin (PM), and gain-bandwidth product. Utilizing an input voltage of 1.8 V and a 0.75 pF compensation capacitor, a gain of 104.1 dB and a PM of 73.78 degrees were achieved. This high-gain cascoded operational amplifier is suitable for applications in bandgap voltage references and filters. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Semiconductors 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: 10.1134/S1063782625601542
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      – Code: eng
        Text: English
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      – SubjectFull: Operational amplifiers
        Type: general
      – SubjectFull: Field-effect transistors
        Type: general
      – SubjectFull: Voltage references
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      – SubjectFull: Alternating currents
        Type: general
      – SubjectFull: Metal oxide semiconductor field-effect transistors
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      – TitleFull: Gain Enhanced Miller Compensated Operational Amplifier.
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            – D: 01
              M: 07
              Text: Jul2025
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              Y: 2025
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