A new class AB differential input stage for implementation of low-voltage high slew rate op amps and linear transconductors

2002 ◽  
Author(s):  
J. Ramirez-Angulo ◽  
R. Gonzalez-Carvajal ◽  
A. Torralba ◽  
C. Nieva
Keyword(s):  
Low Voltage ◽  
Slew Rate ◽  
Input Stage ◽  
Class Ab ◽  
Differential Input ◽  
New Class ◽  
Op Amps

Rail-to-rail constant-g m input stage and class AB output stage for low-voltage CMOS op amps

1994 ◽  
Vol 6 (2) ◽  
pp. 121-133 ◽  
Author(s):  
Jacob H. Botma ◽  
Remco J. Wiegerink ◽  
Sander L. J. Gierkink ◽  
Roelof F. Wassenaar
Keyword(s):  
Low Voltage ◽  
Output Stage ◽  
Input Stage ◽  
Class Ab ◽  
Op Amps ◽  
Rail To Rail

scholarly journals A 0.3 V Rail-to-Rail Ultra-Low-Power OTA with Improved Bandwidth and Slew Rate

2021 ◽  
Vol 11 (2) ◽  
pp. 19
Author(s):  
Francesco Centurelli ◽  
Riccardo Della Sala ◽  
Pietro Monsurrò ◽  
Giuseppe Scotti ◽  
Alessandro Trifiletti
Keyword(s):  
Low Power ◽  
Low Voltage ◽  
Supply Voltage ◽  
Cmos Process ◽  
Slew Rate ◽  
Large Signal ◽  
Output Stage ◽  
Ultra Low Power ◽  
Input Stage ◽  
Rail To Rail

In this paper, we present a novel operational transconductance amplifier (OTA) topology based on a dual-path body-driven input stage that exploits a body-driven current mirror-active load and targets ultra-low-power (ULP) and ultra-low-voltage (ULV) applications, such as IoT or biomedical devices. The proposed OTA exhibits only one high-impedance node, and can therefore be compensated at the output stage, thus not requiring Miller compensation. The input stage ensures rail-to-rail input common-mode range, whereas the gate-driven output stage ensures both a high open-loop gain and an enhanced slew rate. The proposed amplifier was designed in an STMicroelectronics 130 nm CMOS process with a nominal supply voltage of only 0.3 V, and it achieved very good values for both the small-signal and large-signal Figures of Merit. Extensive PVT (process, supply voltage, and temperature) and mismatch simulations are reported to prove the robustness of the proposed amplifier.

A high slew rate, low voltage CMOS class-AB amplifier

2014 ◽  
Author(s):  
Kunchala Sivakumari ◽  
Avireni Srinivasulu ◽  
V. Venkata Reddy
Keyword(s):  
Low Voltage ◽  
Slew Rate ◽  
Class Ab

Class AB output stage for low voltage CMOS op-amps with accurate quiescent current control

2000 ◽  
Vol 36 (21) ◽  
pp. 1753 ◽  
Author(s):  
A. Torralba ◽  
R.G. Carvajal ◽  
J. Martinez-Heredia ◽  
J. Ramírez-Angulo
Keyword(s):  
Low Voltage ◽  
Current Control ◽  
Output Stage ◽  
Class Ab ◽  
Op Amps ◽  
Quiescent Current

Power Efficient Class AB Op-Amps With High and Symmetrical Slew Rate

2014 ◽  
Vol 22 (4) ◽  
pp. 943-947 ◽  
Author(s):  
Jesus Aguado-Ruiz ◽  
Antonio Lopez-Martin ◽  
Javier Lopez-Lemus ◽  
Jaime Ramirez-Angulo
Keyword(s):  
Slew Rate ◽  
Power Efficient ◽  
Class Ab ◽  
Op Amps

Low-Voltage Super class AB CMOS OTA cells with very high slew rate and power efficiency

2005 ◽  
Vol 40 (5) ◽  
pp. 1068-1077 ◽  
Author(s):  
A.J. Lopez-Martin ◽  
S. Baswa ◽  
Jaime Ramirez-Angulo ◽  
R.G. Carvajal
Keyword(s):  
Power Efficiency ◽  
Low Voltage ◽  
Slew Rate ◽  
Class Ab ◽  
Very High
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