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Class-AB high-swing CMOS power amplifier | IEEE …
https://ieeexplore.ieee.org/document/142606/
Class-AB high-swing CMOS power amplifier Abstract: A power amplifier for a loudspeaker and the earpiece of a telephone subset, integrated in the codec chip ARCOFI-SP (audio ringing codec filter featuring speakerphone function), are presented.
Class-AB Audio Power Amplifiers - STMicroelectronics
https://www.st.com/en/audio-ics/class-ab-audio-power-amplifiers.html
STA540 power amplifier. The STA540 contains four single-ended, class-AB audio amplifiers assembled in a Multiwatt15 package. These amplifiers are used for high-quality sound applications. Each amplifier has integrated short-circuit and thermal protection and diagnostic functions. Two amplifiers can be paired up for applications requiring high power output.
(PDF) A Novel Class AB CMOS Operational Amplifier
https://www.researchgate.net/publication/323296662_A_Novel_Class_AB_CMOS_Operational_Amplifier
Traditional Class A CMOS Two Stage Operational Amplifier. Figure 2 DC Gain (dB) 87 97 Unity Gain Bandwidth(MHz) 0.462 2.4 Phase Margin (degree) 60 83 SR+/SR- (V/us)(V/us) 0.08/0.67 2.8/1.5 Icc (uA)...
A Low Voltage, Rail-to-Rail, Class AB CMOS Amplifier With ...
http://rincon-mora.gatech.edu/publicat/jrnls/tcasii01_ab_amp.pdf
Abstract--This paper describes a CMOS rail-to-rail class AB operational amplifier designed to have extremely low output impedance and large current-drive capability. The amplifier uses an innovative output stage, having both source follower and common source stages working simultaneously throughout the output common-mode range. The source
Class AB Output Stage - University of Pennsylvania
https://www.seas.upenn.edu/~ese319/Lecture_Notes/Lec_22_ClassAB_Amplifier_12.pdf
Basic Class AB Amplifier Circuit 1. Bias Q N and Q P into slight conduction (fwd. act.) when v I = 0: i N = i P. 2 Ideally Q N and Q P are: a. Matched (unlikely with discrete transistors and challenging in IC). b. Operate at same ambient temperature. NOTE. This is base-voltage biasing with all its stability problems! i L=i N −i P 3.For v i > 0: i N > i P i.e. Q N
(PDF) A Compact Class-AB CMOS Variable Gain Amplifier
https://www.researchgate.net/publication/228898089_A_Compact_Class-AB_CMOS_Variable_Gain_Amplifier
In this research, a two-stage class AB VGA, each stage comprising of a direct transconductance amplifier and a linear transimpedance amplifier, is designed in Silterra 0.13-μm CMOS utilizing ...
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