A review of hybrid supply modulators in CMOS technologies for envelope tracking PAs

S Bhardwaj, S Moallemi… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This article reviews trends, architectures, and recent developments in CMOS-based supply
modulators (SM) used for envelope-tracking power amplifiers (ET-PAs). This review details …

A high slew-rate enhancement class-AB operational transconductance amplifier (OTA) for switched-capacitor (SC) applications

J Kim, S Song, J Roh - IEEE Access, 2020 - ieeexplore.ieee.org
This article presents a class-AB operational transconductance amplifier (OTA) with a high
slew rate. The proposed class-AB OTA is applied with a slew-rate enhancement technique …

A robust local positive feedback based performance enhancement strategy for non-recycling folded cascode OTA

Y Wang, Q Zhang, SS Yu, X Zhao… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this study, a local positive feedback technique is proposed to enhance the performance of
the folded cascode (FC) operational transconductance amplifier (OTA) when working in its …

Power-efficient single-stage class-AB OTA based on non-linear nested current mirrors

J Beloso-Legarra, A Carlos… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A novel approach to design low-power area-efficient rail-to-rail output single-stage class-AB
operational transconductance amplifiers (OTAs) with enhanced large-and small-signal …

A highly efficient composite class-AB–AB miller op-amp with high gain and stable from 15 pF up to very large capacitive loads

S Pourashraf, J Ramirez-Angulo… - … Transactions on Very …, 2018 - ieeexplore.ieee.org
In this paper, a highly power-efficient class-AB–AB Miller op-amp is discussed. The structure
uses enhancement based on local common-mode feedback to provide class-AB operation …

An ultra-low-power bulk-driven subthreshold super class-AB rail-to-rail CMOS OTA with enhanced small and large signal performance suitable for large capacitive …

S Ghosh, V Bhadauria - Microelectronics Journal, 2021 - Elsevier
This paper introduces a power-efficient super class-AB bulk-driven (BD) operational
transconductance amplifier (OTA) in the subthreshold region suitable for driving a high …

98-dB gain class-AB OTA with 100 pF load capacitor in 180-nm digital CMOS process

SM Anisheh, H Abbasizadeh, H Shamsi… - IEEE …, 2019 - ieeexplore.ieee.org
In this paper, a new two-stage class-AB operational trans-conductance amplifier (OTA) is
proposed. Using active loads in the first stage and improved recycling structure, the effective …

Transconductance and slew rate improvement technique for current recycling folded cascode amplifier

X Zhao, Q Zhang, Y Wang, M Deng - AEU-International Journal of …, 2016 - Elsevier
A proposed technique to achieve transconductance and slew rate improvement of current
recycling folded cascode amplifier is presented in this paper. It adopts the local common …

Slew-Rate Enhancement Techniques for Switched-Capacitors Fast-Settling Amplifiers: A Review

M Dei, F Gagliardi, P Bruschi - Chips, 2024 - mdpi.com
This review is aimed at the integrated circuit design community and it explores slew-rate
enhancement techniques for switched-capacitor amplifiers, with a primary focus on …

Two-stage class-AB OTA with improved specifications

S Ghorbanzadeh, H Dehbovid, A Ghorbani… - … Integrated Circuits and …, 2022 - Springer
This paper proposes a 95 dB DC-gain operational trans-conductance amplifier (OTA) with
improved specifications. The trans-conductance of the first stage is increased by …