Regulus Berdin wrote:

> I had made this on a 6805R3.  I used one pin to make a saw tooth
> waveform from a resistor and a capacitor and feed the noise to the
> input and oversample it.   It give accurate data.

  Sounds good.  Note that the "dither" need not be random noise, it can
just as well be a staircase (unfiltered) or a ramp.  The *only*
requirement is that over an averaging interval, it is uniformly
distributed.  If you think about it, random noise does not fulfil this.
--
  Cheers,
        Paul B.