[sdiy] DCO Question

[Mattias Rickardsson]

Try resetting your accumulator to 0 instead of keeping the overflow, and
each cycle will be identical.

/mr


On 2 November 2017 at 16:26, Tim Ressel <timr at circuitabbey.com> wrote:

> Hi,
>
> I am making a digital oscillator (DCO) and was wondering if there is a way
> to reduce the jitter one gets at higher frequencies. I understand it comes
> from round off error (for lack of a better term): as the accumulator
> reaches the top of the range the remaining amount is less than the value
> being added, and that fraction changes every cycle. This causes jitter, or
> is it aliasing? Anyway, is there a clever way to deal with it?
>
> Thanks!
>
> --
> --Tim Ressel
> Circuit Abbey
> timr at circuitabbey.com
>
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