Classification and design space exploration of low-power three-stage operational transconductance amplifier architectures for wide load ranges

J Riad, JJ Estrada-López, E Sánchez-Sinencio - Electronics, 2019 - mdpi.com
Since operational transconductance amplifiers (OTAs) form the basic building blocks of
many analog systems, the compensation of three-stage OTAs has attracted a lot of attention …

Single Miller capacitor frequency compensation techniques: Theoretical comparison and critical review

AD Grasso, D Marano, G Palumbo… - International Journal of …, 2022 - Wiley Online Library
This paper presents a systematic analytical comparison of the single‐Miller capacitor
frequency compensation techniques suitable for three‐stage complementary metal–oxide …

A 175.2-mW 4-stage OTA with wide load range (400 pF–12 nF) using active parallel compensation

SA Fordjour, J Riad… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Multistage amplifiers are a reliable method of achieving high gain in systems where the
voltage supply is low. The common practice is to prefer 3-stage amplifiers over 4-stage ones …

A biasing approach to design ultra-low-power standard-cell-based analog building blocks for nanometer SoCs

F Centurelli, G Giustolisi, S Pennisi, G Scotti - IEEE Access, 2022 - ieeexplore.ieee.org
This paper presents an approach to design analog building blocks for nanometer systems
on a chip (SoCs) that are based on digital standard-cells. The proposed approach …

Power-scaling output-compensated three-stage OTAs for wide load range applications

J Riad, JJ Estrada-López… - … on Circuits and …, 2020 - ieeexplore.ieee.org
With the aggressive scaling of transistor dimensions, intrinsic device gains are dropping but
the need for high-gain amplifiers still exists, resulting in a great interest in multistage …

Design of three-stage OTA based on settling-time requirements including large and small signal behavior

G Giustolisi, G Palumbo - … on Circuits and Systems I: Regular …, 2020 - ieeexplore.ieee.org
In this paper we are going to analyze the settling-time in single-, two-and three-stage
amplifiers with the intent of deriving approximate but useful design equations that include …

A methodology to derive a symbolic transfer function for multistage amplifiers

H Aminzadeh, AD Grasso, G Palumbo - IEEE Access, 2022 - ieeexplore.ieee.org
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 …

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 …

Frequency compensation of three-stage OTAs to achieve very wide capacitive load range

H Aminzadeh, A Ballo, AD Grasso - IEEE Access, 2022 - ieeexplore.ieee.org
This paper proposes an optimal design approach for three-stage amplifiers driving an ultra-
wide range of load capacitor. To this end, efficient state-of-the-art solutions have been …

Frequency compensation scheme for a full GaN OpAmp driving 1-nF load

S Pennisi, F Pulvirenti, K Samperi - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
This paper presents a frequency compensation scheme of a full GaN operational amplifier
for smart power applications. The amplifier is based on a previous topology originally …