> The DSP outputs a "dithering" stream of 01010101 when the input
> is unchanging. A simpler scheme would imply that 00000000 would
> be outputted

Mislaid a sentence when editing

I meant 00000000 output from a system that monitored the input.
As it stands, the 01010101 DSP output is what you'd expect - a
very small amplitude output signal for a non-changing input. The
finer the resolution of the DAC, the better the S/N ratio (considering
the 01010101 as noise)

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