COMPARATIVE ANALYSIS OF GM CONSANT METHODS OF THE RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER INPUT STAGE IN INPUT COMMON-MODE SIGNAL RANGE

2018 ◽  
Author(s):  
Андрей Юриков ◽  
Andrey Yurikov
Keyword(s):  
Comparative Analysis ◽  
Operational Amplifier ◽  
Common Mode ◽  
Input Stage ◽  
Amplifier Input ◽  
Rail To Rail

scholarly journals A 0.3 V, Rail-to-Rail, Ultralow-Power, Non-Tailed, Body-Driven, Sub-Threshold Amplifier

2021 ◽  
Vol 11 (6) ◽  
pp. 2528 ◽  
Author(s):  
Francesco Centurelli ◽  
Riccardo Della Sala ◽  
Giuseppe Scotti ◽  
Alessandro Trifiletti
Keyword(s):  
Supply Voltage ◽  
Cmos Technology ◽  
Gain Bandwidth ◽  
Common Mode ◽  
Input Stage ◽  
Fully Differential ◽  
Common Mode Voltage ◽  
Rail To Rail ◽  
The Common ◽  
Ultralow Power

A novel, inverter-based, fully differential, body-driven, rail-to-rail, input stage topology is proposed in this paper. The input stage exploits a replica bias control loop to set the common mode current and a common mode feed-forward strategy to set its output common mode voltage. This novel cell is used to build an ultralow voltage (ULV), ultralow-power (ULP), two-stage, unbuffered operational amplifier. A dual path compensation strategy is exploited to improve the frequency response of the circuit. The amplifier has been designed in a commercial 130 nm CMOS technology from STMicroelectronics and is able to operate with a nominal supply voltage of 0.3 V and a power consumption as low as 11.4 nW, while showing about 65 dB gain, a gain bandwidth product around 3.6 kHz with a 50 pF load capacitance and a common mode rejection ratio (CMRR) in excess of 60 dB. Transistor-level simulations show that the proposed circuit outperforms most of the state of the art amplifiers in terms of the main figures of merit. The results of extensive parametric and Monte Carlo simulations have demonstrated the robustness of the proposed circuit to PVT and mismatch variations.

Rail-to-rail amplifier input stage with constant gm and commonmode elimination

2002 ◽  
Vol 38 (24) ◽  
pp. 1491 ◽  
Author(s):  
T.W. Fischer ◽  
A.I. Karsilayan
Keyword(s):  
Input Stage ◽  
Amplifier Input ◽  
Rail To Rail

Low Voltage Differential Input Stage With Improved CMRR and True Rail-to-Rail Common Mode Input Range

2008 ◽  
Vol 55 (12) ◽  
pp. 1229-1233 ◽  
Author(s):  
Jaime RÁmirez-Angulo ◽  
Sandhana Balasubramanian ◽  
Antonio J. LÓpez-Martin ◽  
RamÓn G. Carvajal
Keyword(s):  
Low Voltage ◽  
Common Mode ◽  
Input Stage ◽  
Differential Input ◽  
Rail To Rail ◽  
Input Range

Constant-G/sub m/ rail-to-rail common-mode range input stage with minimum CMRR degradation

1993 ◽  
Vol 28 (6) ◽  
pp. 661-666 ◽  
Author(s):  
J.F. Duque-Carrillo ◽  
J.M. Valverde ◽  
R. Perez-Aloe
Keyword(s):  
Common Mode ◽  
Input Stage ◽  
Rail To Rail
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