D/A resolution ( was Tempco )

Paul Perry pfperry at melbpc.org.au
Fri May 15 18:02:48 CEST 1998


At 09:30 AM 15/05/98 +0200, Ingo debus wrote:
>Brian Towles wrote:
>> The D/A might only have a 1Hz resolution, but by modulating the output
>> between an index and the index + 1, your output voltage would have an
>> _average_ value between the index and the next index.
>
>But don't we have the precision problem again? Usual D/As have a
>differential nonlinearity of +/- 1/4...+/- 1/2 LSB. If you divide one
>D/A LSB into 16 "fine" steps, you might get an error of several steps.
>
this is correct, if what you are wanting is a precise frequency..
but if what you are wanting is to 'smooth' the output, so that the
pitchbend isn't lumpy, then this could be useful.

paul perry melbourne australia




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