IC operational amplifiers are almost omnipresent in analogue audio design. On this page I present some work concerning the performance and implementation of ICs.
Operational Amplifier Distortion
opamp_distortion.pdf (big file!)
A comprehensive measurement series on opamp distortion; currently 59 amplifiers are tested for four basic distortion mechanisms. Be prepared to find substantiall difference amongst various parts. New devices will be added as soon as time permits.
There has been discussions of this document at several internet forums and blogs which might be of interest as well:
The designs described on these pages are not commercial in any way. This means that I do not sell PCBs, kits, or anything like that. It also means that any for-profit use of the information on these pages is strictly prohibited—you may not sell PCBs, kits (neither partial, nor complete) or finished (or unfinished) units of the designs on this site, without the express written consent of Samuel Groner/SG-Acoustics.
Notice that all information, schematics, layouts etc. are supplied as is, and that I can in no way be held responsible for its accurateness, functionality or even safety. Samuel Groner/SG-Acoustics shall not be responsible and disclaims all liability for any loss, liability, damage (whether direct or consequential) or expense of any nature whatsoever, which may be suffered as a result of, or which may be attributable, directly or indirectly, to the use of or reliance upon any information, links or service provided through this website.