[sdiy] IN your mind, what is ....

[jhaible]

In Fredriksen's book "Intuitive IC Opamps"
he calls the LM3900 "the first Quad".

So maybe the main reason for its popularity was
that it simply was the first opamp that only took
1/4 of a DIP 14 package?

(Fredriksen designed the 3900, and also these
other "classics", LM324 and LM339.)

JH.



-----Ursprüngliche Nachricht-----
Von: Grant Richter <grichter at asapnet.net>
An: Joel Kirchartz <joel_kirchartz at hotmail.com>;
<synth-diy at dropmix.xs4all.nl>
Gesendet: Donnerstag, 29. Januar 2004 21:13
Betreff: Re: [sdiy] IN your mind, what is ....


> The LM3900 current differencing amp.
>
> Probably more applications than a regular op-amp.
>
> Serge Tcherepnin built a large part of the Serge system from them.
>
> From: "Joel Kirchartz" <joel_kirchartz at hotmail.com>
> Date: Thu, 29 Jan 2004 14:49:31 -0500
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] IN your mind, what is ....
>
>
> What is the most versatile chip (be specific) ?
> Why do you think so ?
>
> ~kirch
>
>
>
>
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>
>
>