At 01:18 PM 1/16/2004 +1300, you wrote:

>When random noise is added the "true" signal is displaced to various
>locations randomly with a mean position of its true value. On some
>excursions it changes the value the converter will see it as. The degree to
>which this happens relates to its closeness to a conversion boundary. You
>can add other amounts of noise (multiple bits, non integer amounts of
>noise). Simulation or derivation from 1st principles will explain this. I
>imagine that Google will provide material on this.

You need to average 4^n samples to increase the *resolution*  by n bits.
This only improves quantization error, not nonlinearity or span/zero errors.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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