[sdiy] Digital pots for polyphonic portamento..

[Jean-Pierre Desrochers]

I'm building my MIDI2CV mono/poly module and have one question..
I'm gonna have 6 voices CV's outs on my polyphonic mode
and want to use a portamento pot that would control all 6 voices
at the same time. I was guessing to use 3 dual 1meg digital pots (6 pots overall)
(Analog Device AD5242) and 6 caps to make the porta voltage glidings..
Those are 256 taps which makes 1meg/256 = 3906ohms per steps (+ 60 ohm for wiper).
These would be place right between my MAX551 DAC's 0-5v outs and my precision opamp 
voltage followers. I don't want to create CV's 1v/oct unprecision using them so..

What is your thoughts on that..
Cheers,
J-Pierre