Found some LM307s, are they like LM308s????

[Kleber AG]

I'd like to know if they can sound as LM308s for a RAT circuit???
Actually I don't even know what kind of opamp they are...
Ohh no, looks like they are "internally" frequency compensated... :?
Thanks
Kleber AG

[sir_modulus]

Well, LM307/207/107 are all drop in replacements for 741's, but they are lower noise, and all in all better opamps. LM108/208/308's are all Insanely high presicion, and are specialized opamps. I would not want to switch these around.

[StephenGiles]

Ah, does that mean that the Rat distortion is high precision?
Stephen

[sir_modulus]

dunno it says: "The LM108/208/308 series operational amplifiers have the specifications a factor of ten better than FET amplifiers..." That and lots of other little things make it seem bettter.

[brett]

LM307s are cool, but not in the *totally* quiet category of NE5534, TL072, LM308, etc.  
cheers

[Colman]

I used LM307s on my expandora and they sound as good if not better than 07s.
Aharon

[PRR]

You notice this thread was dead for 19+ years???

They are not the same but for "effects" use one is much like the other. Especially since the internal details have evolved over the decades and you can't know which guts you will get.

'307 is a compensated '101 so is a '741-alike.

'308 is actually a different plan and, with suggested 30pFd compensation, an octave slower, which might mellow a RAT.

'10-, '20-, and '30- are commercial industrial military sortings; if you fly through enemy fire war-zones you prefer the '10- part. These used to be different prices; all moot now.


https://www.analog.com/media/en/technical-documentation/data-sheets/lm101a.pdf


https://www.analog.com/media/en/technical-documentation/data-sheets/lt0108.pdf

[Colman]

I couldn't be happier with my LM307s.