[sDIY] CV output buffer chip?

[KA4HJH]

>Why not try a Charge pump to make a negative 5 volt supply and sleep easy at
>night. (Maxim MAX660 or similar). Then you can have your cake and include
>decent performance at ground too...   :^) Harry

If you can keep the switching noise out of the way this is a good solution.
With a +5V supply you're limited to less than 5 octaves of CV anyway,
unless you scale it externally. This way you can get maybe 8 octaves,
depending on output swing. For 10.5 octaves (7 bit conversion) you're going
to need a 12V supply and a good opamp. A good DAC wouldn't hurt.

Terry Bowman, KA4HJH
"The Mac Doctor"