[sdiy] Cheap Midi->CV

[James Patchell]

I would recommend against doing it this way ( if 
http://www.ucapps.de/mbhp/mbhp_aout.pdf is what you are talking about).  I 
did a similar thing on a project I did a few years ago ( 
http://www.oldcrows.net/~patchell/smb1/smb.html )...and in hind sight....I 
would have not done it that way.  The reason I did do it that was was lack 
of board real estate...but the correct way is to use a single DAC and a Mux 
with multiple sample/holds...

The reason is...each DAC has its own gain...and they are off by just enough 
that it is very annoying.

Here is one of the solutions I came up with :

http://www.oldcrows.net/~patchell/synthmodulesII/200-1017.pdf

Although...that 12 bit DAC that I am using costs about $20....but you get 
more bang for your buck as opposed to the MAX525 which I recall cost me 
about $40 each....

At 09:14 AM 9/6/2005 +0800, dougall wrote:
>The midi box one on ucapps.de is very nice but it requires a MAX525
>Digital-Analog-Converter which are very expensive.  Anyone on the list
>know somewhere cheap to get these?
>
>There was talk a while back, of a redesign of the Analog Output board
>to use some cheaper DAC's.
>
>--dougalli

         -Jim
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