On July 22 2002, Mirlo mentioned:
>there is an interesting app note on the Analog Devices website about improving opamp circuit phase response by putting a replica opamp in the NFB loop.<
http://www.diyaudio.com/forums/showthread.php?postid=44998#post44998
Does anyone have an idea what application note this is, and/or the URL?
Many thanks in advance, jonathan carr
>there is an interesting app note on the Analog Devices website about improving opamp circuit phase response by putting a replica opamp in the NFB loop.<
http://www.diyaudio.com/forums/showthread.php?postid=44998#post44998
Does anyone have an idea what application note this is, and/or the URL?
Many thanks in advance, jonathan carr
Hmmm.
This will teach me not to refer to something vaguely, and then never be able to find it again.
I can't find it easily, and I can't remember exactly what they were doing.
The vague picture in my mind of what I think I saw looks like it would create a stability nightmare, so I am assuming I don't remember it well.
Sorry about that!
This will teach me not to refer to something vaguely, and then never be able to find it again.
I can't find it easily, and I can't remember exactly what they were doing.
The vague picture in my mind of what I think I saw looks like it would create a stability nightmare, so I am assuming I don't remember it well.
Sorry about that!
are u talking about composite opamp??
Composite Opamp: the use of high speed CFB opamp to boost the bandwidth of a precision VFB opamp. See link below:
http://www-s.ti.com/sc/psheets/sboa002/sboa002.pdf
or page 13 on te AD797 data sheet:
http://www.analog.com/UploadedFiles/Datasheets/507345751AD797_d.pdf:bigeyes:
Composite Opamp: the use of high speed CFB opamp to boost the bandwidth of a precision VFB opamp. See link below:
http://www-s.ti.com/sc/psheets/sboa002/sboa002.pdf
or page 13 on te AD797 data sheet:
http://www.analog.com/UploadedFiles/Datasheets/507345751AD797_d.pdf:bigeyes:
Elso or jcarr - is this really good?
In what applications should this sort of configuration
be good?
Not for notmal LF-audio, I would imagine.
/halo - has his doubts- wants to KISS - Keep It SSimple
Elso or jcarr - is this really good?Elso Kwak said:Hi Jonathan,
That must be Application Note 107:
Active Feedback Improves Amplifier Phase Accuracy by James Wong.
I couldn't find it on the AD website. I have it on CD-ROM. Can send you the PDF file.
elso/not into opamps anymore
In what applications should this sort of configuration
be good?
Not for notmal LF-audio, I would imagine.
/halo - has his doubts- wants to KISS - Keep It SSimple
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