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A new slew rate enhancement technique for operational transconductance amplifiers
, Article International Journal of Circuit Theory and Applications ; 2021 ; 00989886 (ISSN) ; Roozbakhsh, A ; Rasekhi, M ; Sharif University of Technology
John Wiley and Sons Ltd
2021
Abstract
This paper presents a new symmetric slew rate enhancement (SRE) circuit suitable for operational transconductance amplifiers (OTAs). The proposed SRE circuit is composed of two auxiliary circuits which are automatically activated during fast signal transitions (slewing) by comparing the input and output signals. The auxiliary circuits pump required current in/out the load capacitance. In this way, the slew rate of the amplifier is significantly improved without any extra static power dissipation. The proposed technique can be applied to a variety of operational amplifiers. However, incorporating the proposed SRE circuit into a folded-cascode amplifier (FCA) results in 7× slew rate...
A new slew rate enhancement technique for operational transconductance amplifiers
, Article International Journal of Circuit Theory and Applications ; Volume 50, Issue 3 , 2022 , Pages 997-1014 ; 00989886 (ISSN) ; Roozbakhsh, A ; Rasekhi, M ; Sharif University of Technology
John Wiley and Sons Ltd
2022
Abstract
This paper presents a new symmetric slew rate enhancement (SRE) circuit suitable for operational transconductance amplifiers (OTAs). The proposed SRE circuit is composed of two auxiliary circuits which are automatically activated during fast signal transitions (slewing) by comparing the input and output signals. The auxiliary circuits pump required current in/out the load capacitance. In this way, the slew rate of the amplifier is significantly improved without any extra static power dissipation. The proposed technique can be applied to a variety of operational amplifiers. However, incorporating the proposed SRE circuit into a folded-cascode amplifier (FCA) results in 7× slew rate...