[sdiy] use for CA3140

James Patchell patchell at cox.net
Thu Dec 4 05:30:39 CET 2003


The biggest thing of note about the CA3140 is the very low input bias 
current.  They are a good choice for the integrator in a VCO as you will be 
able to get greater than a 1,000,000 to 1 tuning range.  This is the opamp 
that is shown in the ASM-1 VCO.  Other than that, the CA3140 really is just 
a general purpose run of the mill amplifier.  I have used them quite a 
bit.  A very nice amplifier...in fact.

At 11:41 PM 12/3/2003 +0100, Sven Windisch wrote:
>Hi.
>
>As I sorted through my OpAmps I found a CA3140. A quick look into the
>Datasheet showed, that this is no "general purpose" OpAmp. Is there any
>special synth-related use for it? Pointings to schemos appreciated.
>
>Greetings,
>Sven.
>
>--
>To some ears, "computational philosophy of science" will
>sound like the most self-contradictory enterprise in
>philosophy since business ethics.
>[Paul Thagard in "Computational Philosophy of Science"]

         -Jim
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