A Low Voltage Recycling Folded Cascode OTA based on novel CMRR Magnifier

Authors

  • Mohammadreza Farsi Engineering Faculty, Department of Electrical and Electronic Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran
  • Khalil Monfaredi Engineering Faculty, Department of Electrical and Electronic Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

Keywords:

CMRFC OTA, CMRR enhancement, CMRR magnifier block, Recycling Folded Cascode

Abstract

In this paper, a new recycling folded Cascode Operational Trans-conductance Amplifier (OTA) based on a novel Common Mode Rejection Ratio (CMRR) magnifier block is presented. Further, the principle of its operation is discussed in comparison with the conventional recycling folded Cascode OTA. The supply voltage is decreased in the proposed CMRR Magnifier based Recycling Folded Cascode (CMRFC) OTA, due to the elimination of the Cascode transistors. The common mode current is significantly removed by the CMRR magnifier block, which subsequently yields to a relatively higher CMRR compared with its conventional version. The DC bias voltage of the Cascode stage is also eliminated, incorporating the self Cascode structure. To provide a fair comparison, the CMRFC OTA is simulated along with its conventional version, namely the Double Recycling Folded Cascode (DRFC) OTA structure, at Cadence environment by considering the 180nm CMOS technology. The simulation results for the proposed OTA yield 53.4 dB DC-gain, 80.32 degree phase margin and 86.87 dB CMRR with 1.5 volt supply voltage, making it a suitable choice for low-voltage applications.

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Author Biography

Khalil Monfaredi, Engineering Faculty, Department of Electrical and Electronic Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

Dr. Khalil Monfaredi received the B.Sc., M.Sc., and PhD degrees from Tabriz University in 2001 and Iran University of Science and Technology in 2003 and 2011, respectively. He was with Electronic Research Center Group, during 2001 to 2011 and was also an academic staff with Islamic Azad University, Miyandoab Branch from 2006 to 2012. He served as the Research and Educational Assistant of Miyandoab Sama College from 2009 to 2011 and vice chancellor during 2011 to 2012. He is currently with Electrical and Electronics Engineering Faculty, Azarbaijan Shahid Madani University, Tabriz 5375171379, Islamic Republic of Iran. He is the author or coauthor of more than thirty national and international papers and also collaborated in several research projects. He is also the founder of electronic department in Islamic Azad University-Miyandoab Branch and was the chairman of 2010 electronic and computer scientific conference (ECSC2010) held in Islamic Azad University, Miyandoab Branch. His current research interests include current mode integrated circuit design, low voltage, low power circuit and systems and analog microelectronics and data converters.

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Published

2018-10-31

How to Cite

Farsi, M., & Monfaredi, K. (2018). A Low Voltage Recycling Folded Cascode OTA based on novel CMRR Magnifier. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(4), 37–42. Retrieved from https://jtec.utem.edu.my/jtec/article/view/3444

Issue

Vol. 10 No. 4: October - December 2018

Section

Articles

License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)