[time-nuts] DDS'ery

Luis Cupido cupido at mail.ua.pt
Mon Jun 20 14:53:04 UTC 2011


Forgot the sine table...
I meant obviously <...an accumulator 'sine table' and DAC...>
lc.


On 6/20/2011 3:46 PM, Luis Cupido wrote:
> Folks, a quick one...
>
> A DDS, that is an accumulator with a DAC followed by a low pass filter
> and comparator (zero crossing) to produce a square wave to drive a PLL
> or a MIXER or else (at logic levels).
>
> Isn't it the very same thing as just using the most significant bit of
> the accumulator.
>
> Or am I missing something here ?
>
> Comments appreciated.
> thanks.
>
> Luis Cupido.
> ct1dmk.
>
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