> yes, i think so... I need possibly more than 9 bit precision. What i am t=
rying to do
> is digital control of an analog audio vco. I need veeeeery low noise ;) I=
 know that
> some brands, like Dave smith instruments use 8 bit precision for vcf cuto=
ff and even
> pitch wheel (in older instruments). I want more. I wanted to avoid PWM. I=
n that case
> I would have used a third order butterworth vcvs to have about 0,5-1 mVpp=
 noise, but
> i wanted to try something else. But, at this point, i guess i'll stay on =
pwm :/
> Thank you all!

You might get 16 bit precision in a micro, but I doubt it will be low noise=
.. There is a reason that these extra bits of accuracy are not commonly avai=
lable ...

If you really need lots of precision then an external DAC will be the only =
way. It will also allow you to lay out grounding in a manner that will allo=
w you to use the extra bits, and get the noise level you are after.
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