[sdiy] 3038 vco?

[James Patchell]

Thats 8038....and there are no modern direct replacements I know of.  Maxim 
has a newer function generator chip that is a lot fancier, but it is not a 
pin for pin replacement.

         Seems like someone else brought that circuit up before.  I am sure 
the circuit works, but how useful it is I am sure depends on what you are 
going to use it for, and how.

         How accurate and stable an oscillator needs to be depends a lot on 
personal taste and application.  As a pitch source for a system that has 
mostly 1V/Oct VCO's in it, it is probably of little use.  For a small 
monophonic synth, it might be pretty nice.  As an LFO, it might be great...

         For myself, I prefer the Terry Michaels (ASM-1) VCO core when 
making pitch sources.  It is very simple, and it performs very nicely.


At 11:38 AM 1/25/2004 -0400, Shokwave wrote:

>Just stumbled across:
>http://www.midwest-analog.com/diylvco.html
>
>It looks interesting. Anyone built this before? Comments? Have the 3038's
>been replaced with something better over the years? It's an old chip.
>
>-Darren

         -Jim
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