High-performance micropower class AB current mirror

2012 ◽  
Vol 48 (14) ◽  
pp. 823 ◽  
Author(s):  
F. Esparza-Alfaro ◽  
A.J. Lopez-Martin ◽  
J. Ramirez-Angulo ◽  
R.G. Carvajal
Keyword(s):  
High Performance ◽  
Current Mirror ◽  
Class Ab

Fully Differential Class-AB OTA with Improved CMRR

2017 ◽  
Vol 26 (11) ◽  
pp. 1750169 ◽  
Author(s):  
Francesco Centurelli ◽  
Pietro Monsurrò ◽  
Gaetano Parisi ◽  
Pasquale Tommasino ◽  
Alessandro Trifiletti
Keyword(s):  
Cmos Technology ◽  
Current Mirror ◽  
Differential Mode ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Class Ab ◽  
Fully Differential ◽  
Rejection Ratio ◽  
Mode Behavior ◽  
The Common

This paper presents a fully differential class-AB current mirror OTA that improves the common-mode behavior of a topology that presents very good differential-mode performance but poor common-mode rejection ratio (CMRR). The proposed solution requires a low-current auxiliary circuit driven by the input signal, to compensate the effect of the common-mode input component. Simulations in 40-nm CMOS technology show a net reduction of common-mode gain of more than 90[Formula: see text]dB without affecting the differential-mode behavior; a sample-and-hold amplifier exploiting the proposed amplifier has also been simulated.

Design of a New Low Power Fully Differential Amplifier with Settling Time Enhancement Characteristics

2015 ◽  
Vol 24 (06) ◽  
pp. 1550078 ◽  
Author(s):  
Seid Jafar Hosseinipouya ◽  
Farhad Dastadast
Keyword(s):  
High Performance ◽  
Settling Time ◽  
Cmos Process ◽  
Output Stage ◽  
Common Mode ◽  
Class Ab ◽  
Fully Differential ◽  
Op Amp ◽  
Transconductance Amplifier ◽  
Adaptive Biasing

High performance of fully differential operational transconductance amplifier is designed and implemented using a 0.18-μm CMOS process. The implemented op-amp uses common mode feedback (CMFB) circuit operating in weak inversion region which does not affect other electrical characteristics due to eliminating common mode (CM) levels automatically leading to improve CM rejection ratio (CMRR) of the amplifier significantly. Moreover, the output stage has class-AB operation so that its current can be made larger due to increasing the output current dynamically using adaptive biasing circuit. Additionally, the AC currents of the active loads have been significantly reduced using negative impedances to increase the gain of the amplifier. The results show the GBW 2.3 MHz, slew rate 2.6 V/μs and 1% settling time 150 ns with a capacitive load of 15 pF. This amplifier dissipates only 6.2 μW from a 1.2 V power supply.

Compact class AB CMOS current mirror

2008 ◽  
Vol 44 (23) ◽  
pp. 1335 ◽  
Author(s):  
A.J. Lopez-Martin ◽  
J. Ramírez-Angulo ◽  
R.G. Carvajal ◽  
J.M. Algueta
Keyword(s):  
Current Mirror ◽  
Class Ab ◽  
Compact Class

A low voltage low power high performance FGMOS based current mirror

2017 ◽  
Vol 10 ◽  
pp. 263-271 ◽  
Author(s):  
Charu Rana ◽  
Neelofer Afzal ◽  
Dinesh Prasad
Keyword(s):  
Low Power ◽  
High Performance ◽  
Low Voltage ◽  
Current Mirror

A very high performance compact CMOS current mirror

2014 ◽  
Vol 81 (2) ◽  
pp. 367-375 ◽  
Author(s):  
Bhawna Aggarwal ◽  
Maneesha Gupta ◽  
Anil Kumar Gupta ◽  
Sahil Bansal
Keyword(s):  
High Performance ◽  
Current Mirror ◽  
Very High

Compact implementation of high-performance CMOS current mirror

2005 ◽  
Vol 41 (10) ◽  
pp. 570 ◽  
Author(s):  
J. Ramirez-Angulo ◽  
M.S. Sawant ◽  
A. López-Martín ◽  
R.G. Carvajal
Keyword(s):  
High Performance ◽  
Current Mirror

A very compact CMOS class AB current mirror for low voltage applications

2012 ◽  
Author(s):  
Jesus E. Molinar-Solis ◽  
Rodolfo Z. Garcia-Lozano ◽  
Cuauhtemoc Hidalgo-Cortes ◽  
Jose Miguel Rocha-Perez ◽  
Alejandro Diaz-Sanchez
Keyword(s):  
Low Voltage ◽  
Current Mirror ◽  
Class Ab

A high-performance 1.2V–99μW rail-to-rail CMOS class AB amplifier

2015 ◽  
Vol 46 (1) ◽  
pp. 96-102 ◽  
Author(s):  
M.R. Valero ◽  
N. Medrano ◽  
S. Celma ◽  
B. Calvo
Keyword(s):  
High Performance ◽  
Class Ab ◽  
Rail To Rail

scholarly journals Current mode approach: High performance 0.35 μm CMOS class AB push-pull current amplifier

2003 ◽  
Vol 16 (2) ◽  
pp. 195-204
Author(s):  
Lyes Bouzerara ◽  
Mohand Belaroussi
Keyword(s):  
High Performance ◽  
Supply Voltage ◽  
Current Mode ◽  
Current Gain ◽  
Design Parameters ◽  
Power Supply Voltage ◽  
Current Amplifier ◽  
Class Ab ◽  
Current Mirrors ◽  
General Circuits

A very high bandwidth class AB (Push-Pull) current amplifier using the compensation resistor technique is presented and analyzed. Such technique stands as a powerful method of bandwidth enhancement for general circuits using CMOS current mirrors. The proposed bandwidth is enhanced from 675 MHz for the uncompensated current amplifier to 745MHz for the compensated one without affecting the current gain and other design parameters such as power consumption and output swing. The circuit exhibits a current gain of 20 dB and consumes 1.48 mW for ?2.5V power supply voltage. All simulation results were performed using Hspice tool with 0.35^m CMOS TSMC parameters.

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