Folded Cascode Operational Amplifier Design Utilizing 0.25 µm CMOS Technology

Authors

  • Taha Rashid Computer and Microelectronic Systems, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Skudai 81310, Johor Bahru, Malaysia
  • MOHAMMED RASHEED Applied Sciences Department, University of Technology, Baghdad, Iraq
  • Muhammad Abdelhadi Sarhan Mathematics Science Department, College of Science, Mustansiriyah University, Baghdad, Iraq
  • Ahmed Shawki Jaber Mathematics Science Department, College of Science, Mustansiriyah University, Baghdad, Iraq
  • Mustafa Nuhad Aldaraji Department of Boilogy, College of Science, University Of Al-Anbar, Anbar, Iraq
  • Tarek Saidani Department of Physics, Akli Mohaned Oulhadj University of Bouira, Bouira, 10000, Algeria
  • Ahmed Rashid College of Arts, Al-Iraqia University, Baghdad, Iraq

DOI:

https://doi.org/10.55145/ajest.2023.01.01.009

Keywords:

High ICMR, high open loop DC voltage gain, power dissipation, Zero (z), phase margin (PM)

Abstract

A one-stage Folded Cascode Operational Amplifier with the self-biasing scheme for the PMOS differential input stage is designed by using LTspice simulator and the designing procedure is described. This folded op amp will have a high Common-mode input range (ICMR) and a high maximum voltage output thereby high gain. The LTspice simulation results correlate very well with the hand calculations obtained theoretical values. All the MOSFETs are kept in saturation to ensure high open loop gain. Then, a two-stage op amp circuit has been designed by assuming Zero (z)= 10 GB, and phase margin (PM= 68o). The obtained result of the output gain for this design was Avo= 91 dB, indicating that the design has a high gain.

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Published

2023-01-03

How to Cite

Rashid, T., RASHEED, M., Sarhan, M. A. ., Jaber, A. S. ., Aldaraji, M. N. ., Saidani, T., & Rashid, A. . (2023). Folded Cascode Operational Amplifier Design Utilizing 0.25 µm CMOS Technology . Al-Salam Journal for Engineering and Technology, 2(1), 76–84. https://doi.org/10.55145/ajest.2023.01.01.009

Issue

Vol. 2 No. 1 (2023)

Section

Articles

License

Copyright (c) 2023 Taha Rashid, MOHAMMED RASHEED, Muhammad Abdelhadi Sarhan, Ahmed Shawki Jaber, Mustafa Nuhad Aldaraji, Tarek Saidani, Ahmed Rashid

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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