On Mon, 20 Jun 2011 16:39:16 +0100
Luis Cupido <[email protected]> wrote:
> Well, if we really need to filter it out
> we better filter the MSB and square it
> again...
>
> Why having a DAC for ???
>
> Right ?
If you filter a square wave, you have a lot more harmonics than
if you filter a signal that is already nearly sine. Hence the
DAC stage gives you a higher signal purity. And as filters are
never optimal, you'd rather go with a more pure signal :-)
Attila Kinali
--
Why does it take years to find the answers to
the questions one should have asked long ago?
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