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Old 14th April 2007, 03:14 AM   #1
sam9 is offline sam9  United States
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Default Self om LM4562

For those who may be interested, Doug Self has recently added the LM4562 to opamp commentary.
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Old 14th April 2007, 01:57 PM   #2
awpagan is offline awpagan  Australia
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And for those that need a link
http://www.dself.dsl.pipex.com/ampins/webbop/LM4562.htm

allan

ps also the common-mode problem?
similar to the ne5534
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Old 15th April 2007, 11:03 AM   #3
OzMike is offline OzMike  Australia
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Looks like a cheap shot from Self.

As soon as the lower impedance feedback network is used the common mode distortion drops away. Whenever a differential stage is unbalanced with source and feedback impedances the distortion due to common mode distortion will increase. Amplifiers should have vaguely similar source and feedback impedances.

Mike
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Old 15th April 2007, 04:44 PM   #4
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"..........Looks like a cheap shot from Self..............."

Not an appropriate comment I would think. Self took some measurements ( for free ) . He did not cook them up or make them look bad for any reason. Thanks to him for doing so.

The LM44562 is a very good sounding opamp and those measurements go along with it .
One can just go along with it's sound and not bother about the graphs.
Cheers.
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Old 16th April 2007, 02:37 PM   #5
mikeks is offline mikeks  United Kingdom
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Quote:
Originally posted by OzMike
Looks like a cheap shot from Self.
This is nonsense.


Quote:
Originally posted by ashok
One can just go along with it's sound and not bother about the graphs.
No.
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Old 16th April 2007, 03:00 PM   #6
Ryssen is offline Ryssen  Sweden
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Quote:
No.
You mean,what you hear is NOT what you hear?
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Old 17th April 2007, 01:54 AM   #7
sam9 is offline sam9  United States
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Quote:
quote:
No.
You mean,what you hear is NOT what you hear?
What you hear may not be what others hear. I can stand more HF distortion than some people simply because with age by HF "personal frequency response" rolls off sooner than a couple of decades ago.
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Old 17th April 2007, 02:11 AM   #8
Ryssen is offline Ryssen  Sweden
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Then if sommeone don´t like what they hear and it cannot be tweaked,use an other opamp then..
There are meny opams that I don´t like and I dont use them..
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