[sdiy] converting a 10v p to p to a 0-5 volt signal

[Adam Schabtach]

> According to this thread:
> 
>    http://dropmix.xs4all.nl/pipermail/synth-diy/2008-November/
> 011040.html
> 
> Seb may be the man to ask.

Thanks for pointing that out, Neil. If you skim through that thread you'll
find this link:
http://www.audiodesignline.com/204802026?printableArticle=true
That article pretty much covers what we're talking about here. Gain and
level-shifting circuits are discussed, as are overvoltage protection
circuits (at the very end). Looks like the author recommends the strategy of
running the op-amp from the same +5V supply as the ADC, but there's also a
clever little circuit that uses a single Schottky diode to protect against
negative input voltages and splits the input current-limiting resistor in
two as someone else suggested today. There's more info and technical
considerations here than are likely to be relevant to simple CV-processing
applications, I suspect.

--Adam