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An Introduction to Current Feedback Amplifiers for Audio
https://www.ovationhifidelity.com/wp-content/uploads/2019/05/An-Introduction-to-CFA-Amplifiers-for-Audio.pdf
An Introduction to Current Feedback Amplifiers for Audio. www.ovationhifidelity.com Page 4. A selection of the authors amplifier designs from front to rear: 100 W class AB CFA nx-Amplifier, 15 W CFA Class A sx-Amplifier; Rear LHS 280 W class AB VFA Ovation 250 and rear RHS the 180 W class AB VFA e-Amp.
Current Feedback Amplifiers I | Analog Devices
https://www.analog.com/en/analog-dialogue/articles/current-feedback-amplifiers-1.html
Current-feedback device data sheets will list specific optimum values of R F for various gain settings. Current feedback amplifiers have excellent slew-rate capabilities. While it is possible to design a voltage-feedback amplifier with high slew rate, the current-feedback architecture is inherently faster.
The Alexander Current-Feedback Audio Power …
https://www.analog.com/media/en/technical-documentation/application-notes/58052492001115525484056221917334AN211.pdf
Title: The Alexander Current-Feedback Audio Power Amplifier Application Note (AN-211) Author: Analog Devices, Inc. Created Date: 0-01-01T00:00:00Z
Current Feedback Amplifier - diyAudio
https://www.diyaudio.com/archive/blogs/rjm/828-current-feedback-amplifier.html
Current Feedback Amplifier. Found this today: DC Coupled Amplifiers for Audio from an 11 year old web page by one Knut Harald Nygaard. I've taken some minor liberties with the circuit, shown in the second, color image below. Replaced the current sources with resistors and moved the output buffer out of the feedback loop.
Current Feedback vs Voltage Feedback - Linear Audio
https://linearaudio.nl/sites/linearaudio.net/files/current_feedback_vs_voltage_feedback_amplifiers.pdf
• For Current Feedback op amps, the loop gain is set by the feedback impedance allowing an independent setting for the signal gain. The feedback resistor becomes the frequency response compensation. • Both amplifiers are showing the feedback path compensation for again of …
Current Feedback Amplifier | diyAudio
https://www.diyaudio.com/community/threads/current-feedback-amplifier.376649/
I am used to Voltage Feedback design but wants to get into Current Feedback Design but their some problem. Most CFA example i can find a diamond buffer based ,which are known to cancel 2nd order distortion , which are the last thing i want. I …
In defense of the current-feedback amplifier - EDN
https://www.edn.com/in-defense-of-the-current-feedback-amplifier/
The basic CFA is a transimpedance-type amplifier, which responds to the current I n to produce the voltage V o with an open-loop gain of a ( jf ) = z ( jf ) (6 a ) in V/A. In negative-feedback operation, In acts as the error signal . This current stems from an imbalance between I 1 and I 2 , regardless of how such an imbalance is created.
AES E-Library » A Current-Feedback Audio Power Amplifier
https://www.aes.org/e-lib/browse.cfm?elib=5792
A new low cost, high performance audio power amplifier topology that uses current-feedback in the main gain stage is described. This technique, which has previously been restricted mainly to wideband and video amplifier circuit design, improves on the more common, voltage-feedback amplifier topology by providing a wide closed-loop bandwidth relatively …
r.ANALOG AN·211 WDEVICES APPLICATION NOTE
http://buildaudioamps.com/wp-content/uploads/2015/04/Alexander%20Current%20FB%20Amp.pdf
Current feedback operational amplifiers were originally introduced because they overcame the bandwidth varia tion, inversely proportional to closed-loop gain, exhib ited by voltage feedback amplifiers. They still show a slight variation of bandwidth, however; as the gain is increased above unity, but it is much less significant
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