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(PDF) A 1-V CMOS audio amplifier for low cost hearing aids
https://www.researchgate.net/publication/224349195_A_1-V_CMOS_audio_amplifier_for_low_cost_hearing_aids
The paper describes a very low-cost analog audio amplifier IC for hearing aid devices. The amplifier employs an effective offset cancellation analog …
MOSFET Amplifier, LDMOS Amplifier, CMOS Amplifier & …
https://www.minitool.com/lib/mosfet-amplifier.html
CMOS Amplifier Complementary Metal–Oxide–Semiconductor ( CMOS) amplifiers are ubiquitous analog circuits in computers, cellphones, cameras, biomedical circuits, audio systems, telecommunication systems, as well as many other systems. CMOS amplifiers’ performance influences the whole specifications of the systems. They make use of MOSFETs.
TS931 - Micropower amplifier with CMOS inputs ...
https://www.st.com/en/amplifiers-and-comparators/ts931.html
The amplifiers space saving 5-pin SOT23-5 package with outer dimensions of 2.8 mm x 2.9 mm make them very easy to implement on a board design. All features Rail-to-rail output voltage swing Micropower consumption (20 μA) Single supply operation (2.7 to 10 V) Low offset (2 mV max. for TS93xB) CMOS inputs Ultra low input bias current (1 pA)
OPA1656: High-Performance CMOS Audio Op Amp | diyAudio
https://www.diyaudio.com/community/threads/opa1656-high-performance-cmos-audio-op-amp.335416/
For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor.
OPA1656: High-Performance CMOS Audio Op Amp | Page 6 ...
https://www.diyaudio.com/community/threads/opa1656-high-performance-cmos-audio-op-amp.335416/page-6
The OPA1641 would be slightly better. It has the most stable input capacitance vs. common mode voltage that I've measured on any op amp. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for sources …
5. CMOS Operational Amplifiers - IMS
http://ims.unipv.it/Courses/download/AIC/PresentationNO05.pdf
CMOS Operational Amplifiers 1 Analog Design for CMOS VLSI Systems Franco Maloberti Basic op-amp The ideal operational amplifier is a voltage controlled voltage source with infinite gain, infinite input impedance and zero output impedance. The op-amp is always used in feedback configuration. 5.
CMOS Inverter Amplifier - Wayne State University
http://webpages.eng.wayne.edu/cadence/ECE6570/doc/lect6_1.pdf
Cmos inverter amplifier circuit 1. Low Frequency Small Signal Equivalent Circuit Figure 2( a) shows its low frequency equivalent circuit. That is, all the stray capacitances are ignored. In this circuit, PMOS transistor MP acts as the load of the driver NMOS transistor MN , and vice
Basic Amplifiers and Differential Amplifier
http://www.cse.psu.edu/~kxc104/class/cse577/11s/lec/S02BasicAmp.pdf
CD stage amplifier is suitable for output stage of OPAmp due to its low output impedance and large bandwidth. However, in CMOS analog IC, CS stage is more widely used for output stage OPAmp than CD stage. Why? 2/22/2011 Insoo Kim
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