 Amazing opamp measurement shoot-out [message #368672] |
Tue, 02 September 2008 01:51  |
 bruno putzeys
Messages: 965
Registered: November 2006
Location: Rotselaar (BE) |
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Samuel Groner has just finished a much-needed but very labour intensive work: a detailed measurement shoot-out of twenty-seven op amp IC's commonly found in audio circuits.
http://www.sg-acoustics.ch/analogue_audio/ic_opamps/pdf/opam p_distortion.pdf
Along with the measurements come a description of the test setup and an op amp theory primer. A required download for anyone using op amps.
Pro audio engineering means building stuff that works really well and that sounds great as a result.
Affiliations: Hypex, Grimm Audio.
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| Re: Amazing opamp measurement shoot-out [message #369451 is a reply to message #368672 ] |
Thu, 04 September 2008 14:13  |
 John Roberts {JR}
Messages: 214
Registered: April 2004
Location: MS |
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+1
Samuel invested a lot of time in this and it's nice to see unbiased 3rd party measurements, not that the IC makers put their thumb on the scale, but they surely don't waste much ink publishing specs where they don't look so good.
JR
Resotune at http://circularscience.com/
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| Re: Amazing opamp measurement shoot-out [message #371990 is a reply to message #368672 ] |
Sat, 13 September 2008 12:15 |
Jim Williams
Messages: 954
Registered: May 2005
Location: beautiful carlsbad, CA |
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That's Walter Jung, staff scientist at Analog Devices. He wrote the original Op Amp cookbook in the 1970's and the groundbreaking Opamp Applications for Audio, which I still have in the library. I was fortunate to attend an Analog Devices seminar years ago which he attended. He's been a leader in this field for many years. I managed to get him to sit with me for the lunch break and I picked his brain so much neither of us had time to eat. A true gentleman.
Jim Williams
Audio Upgrades
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| Re: Amazing opamp measurement shoot-out [message #372083 is a reply to message #372012 ] |
Sat, 13 September 2008 23:26 |
Andy Peters
Messages: 1093
Registered: April 2004
Location: Tucson, AZ |
Platinum Member |
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| Larrchild wrote on Sat, 13 September 2008 13:01 |
Never heard of him.
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On the internet, nobody knows that you're being facetious.
-a
"On the Internet, nobody can hear you mix a band."
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| Re: Amazing opamp measurement shoot-out [message #372288 is a reply to message #372083 ] |
Mon, 15 September 2008 07:16 |
bruno putzeys
Messages: 965
Registered: November 2006
Location: Rotselaar (BE) |
Gold Member |
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| Andy Peters wrote on Sun, 14 September 2008 06:26 |
| Larrchild wrote on Sat, 13 September 2008 13:01 |
(...)
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On the internet, nobody knows that you're being facetious.
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Yet, through no other means I found out as much.
Pro audio engineering means building stuff that works really well and that sounds great as a result.
Affiliations: Hypex, Grimm Audio.
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