A Methodology to Derive a Symbolic Transfer Function for Multistage Amplifiers

Hamed Aminzadeh; Alfio Dario Grasso; Gaetano Palumbo

doi:10.1109/ACCESS.2022.3147879

IEEE Access (Jan 2022)

A Methodology to Derive a Symbolic Transfer Function for Multistage Amplifiers

Hamed Aminzadeh,
Alfio Dario Grasso,
Gaetano Palumbo

Affiliations

Hamed Aminzadeh: ORCiD; Department of Electrical Engineering, Payame Noor University (PNU), Tehran, Iran
Alfio Dario Grasso: ORCiD; Dipartimento di Ingegneria Elettrica Elettronica e Informatica (DIEEI), University of Catania, Catania, Italy
Gaetano Palumbo: ORCiD; Dipartimento di Ingegneria Elettrica Elettronica e Informatica (DIEEI), University of Catania, Catania, Italy

DOI: https://doi.org/10.1109/ACCESS.2022.3147879
Journal volume & issue: Vol. 10
pp. 14062 – 14075

Abstract

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In this paper, a simple while effective methodology to calculate the symbolic transfer function of a multistage amplifier with frequency compensation is proposed. Three general amplifier models are introduced and analyzed, which represent basic topologies found in the literature. For these amplifier models, the symbolic transfer function is derived and specific strategies for the zero and non-dominant pole expressions are presented. The methodology is suited for hand calculations and yields accurate results while offering more intuition into the operation of the widely adopted frequency compensation solutions discussed in the literature. The effectiveness of the proposed approach is validated through various typical cases of study.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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