Design method for two-Stage CMOS operational amplifier applying load/miller capacitor compensation

Abolfazl Sadeqi, Javad Rahmani, Saeed Habibifar, Muhammad Ammar Khan and Hafiz Mudassir Munir

MPRA Paper from University Library of Munich, Germany

Abstract: CMOS operational amplifiers (Op-amp) are present integral components in various analog circuit systems. Adding frequency compensation elements is the only critical solution for avoiding Op-amp instability. This article presents a designed two-stage CMOS Op-amp using a miller capacitor, a nulling resistor, and a common-gate current buffer for compensation purposes. All the design parameters of the proposed Op-amp were determined based on the corresponding equations of gain, slew rate, phase margin, power dissipation, etc. In order to verify the parameter values, the developed Op-amp circuit was simulated in HSPICE, possessing two critical characteristics: Op-amp with miller capacitor and a robust bias circuit. Afterwards, the expected values from the theoretical section were compared with simulation results thus proving that the advanced method in this paper was validly designed and implemented. This technique promises a real-world scale Op-amp with high unity-gain, excessive input common-mode range voltage, reasonable gain bandwidth, and a practicable slew rate.

Keywords: CMOS Analog Integrated Circuit; Compensation Circuit; Miller Capacitor; Operational Amplifier; Nulling Resistor (search for similar items in EconPapers)
JEL-codes: L86 O31 Q26 Q55 (search for similar items in EconPapers)
Date: 2020-06-12, Revised 2020-03-12
References: View references in EconPapers View complete reference list from CitEc
Citations:

Published in Computational Research Progress in Applied Science & Engineering 03.06(2020): pp. 153-162

Downloads: (external link)
https://mpra.ub.uni-muenchen.de/102931/1/MPRA_paper_102931.pdf original version (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:pra:mprapa:102931

Access Statistics for this paper

More papers in MPRA Paper from University Library of Munich, Germany Ludwigstraße 33, D-80539 Munich, Germany. Contact information at EDIRC.
Bibliographic data for series maintained by Joachim Winter ().