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Design of carbon allotrope FET-based folded cascode operational transconductance amplifiers (FC-OTA).

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Title: Design of carbon allotrope FET-based folded cascode operational transconductance amplifiers (FC-OTA).
Authors: Bintul Islam, Mir1 (AUTHOR) mir1909967@st.jmi.ac.in, Nizamuddin, M.1 (AUTHOR), Islam, S. S2 (AUTHOR)
Source: International Journal of Electronics. Feb2025, Vol. 112 Issue 2, p295-315. 21p.
Subject Terms: Operational amplifiers, Electric capacity, Voltage, Carbon, Diameter
Abstract: Throughout this study, a high-gain, low-energy folded cascode operational transconductance amplifier (FC-OTA) was modelled utilising HSPICE software. The FC-OTA designs included implementations availing CNFETs, GNRFETs, and mixed involving a combination of CNFETs with CMOS. Comparison with traditional CMOS-based FC-OTAs revealed that CNFET-based FC-OTAs exhibited considerable enhancements, displaying significant escalation in DC amplification, output resistance, average power dissipation, and CMRR. The phase margin in CNT-based FC-OTAs indicated stability. Moreover, CNT-based devices showed substantial rise in direct current amplification over GNRFET-FC-OTAs. The study further explored the operational effectiveness of proposed FC-OTAs by varying parameters such as CNT diameter, CNT pitch, and the number of CNTs, identifying optimal values that significantly enhance the FC-OTA's performance. Comprehensive parametric and Monte Carlo analyses demonstrated OTA's resilience to changes in supply voltage, temperature, capacitance, and mismatches. In summary, the folded cascode approach was found to enhance gain and reduce average power in CNFET-based FC-OTAs in comparison to other structural configurations. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Electronics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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: Design of carbon allotrope FET-based folded cascode operational transconductance amplifiers (FC-OTA).
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  Data: <searchLink fieldCode="AR" term="%22Bintul+Islam%2C+Mir%22">Bintul Islam, Mir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mir1909967@st.jmi.ac.in</i><br /><searchLink fieldCode="AR" term="%22Nizamuddin%2C+M%2E%22">Nizamuddin, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Islam%2C+S%2E+S%22">Islam, S. S</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Electronics%22">International Journal of Electronics</searchLink>. Feb2025, Vol. 112 Issue 2, p295-315. 21p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Operational+amplifiers%22">Operational amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+capacity%22">Electric capacity</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage%22">Voltage</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon%22">Carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Diameter%22">Diameter</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Throughout this study, a high-gain, low-energy folded cascode operational transconductance amplifier (FC-OTA) was modelled utilising HSPICE software. The FC-OTA designs included implementations availing CNFETs, GNRFETs, and mixed involving a combination of CNFETs with CMOS. Comparison with traditional CMOS-based FC-OTAs revealed that CNFET-based FC-OTAs exhibited considerable enhancements, displaying significant escalation in DC amplification, output resistance, average power dissipation, and CMRR. The phase margin in CNT-based FC-OTAs indicated stability. Moreover, CNT-based devices showed substantial rise in direct current amplification over GNRFET-FC-OTAs. The study further explored the operational effectiveness of proposed FC-OTAs by varying parameters such as CNT diameter, CNT pitch, and the number of CNTs, identifying optimal values that significantly enhance the FC-OTA's performance. Comprehensive parametric and Monte Carlo analyses demonstrated OTA's resilience to changes in supply voltage, temperature, capacitance, and mismatches. In summary, the folded cascode approach was found to enhance gain and reduce average power in CNFET-based FC-OTAs in comparison to other structural configurations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Electronics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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: 10.1080/00207217.2024.2302335
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      – Code: eng
        Text: English
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        PageCount: 21
        StartPage: 295
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      – SubjectFull: Operational amplifiers
        Type: general
      – SubjectFull: Electric capacity
        Type: general
      – SubjectFull: Voltage
        Type: general
      – SubjectFull: Carbon
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      – SubjectFull: Diameter
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      – TitleFull: Design of carbon allotrope FET-based folded cascode operational transconductance amplifiers (FC-OTA).
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            – D: 01
              M: 02
              Text: Feb2025
              Type: published
              Y: 2025
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