Flash ADC selection, or other approach?
Tom Jennings
tomj at wps.com
Fri Oct 22 15:00:15 CDT 2004
On Tue, 19 Oct 2004, Martin Bishop wrote:
> wrt latency, not even asynchronous logic will give you ZERO LATENCY. And,
> if I've understood the requirement correctly it is to acquire a finite block
> of data at a constant rate without gaps; so latency is not a system level
> requirement.
You are of course correct, I was speaking casually, I meant
no VARIABLE latency, or more precisely, no latency not easily
correctable; zooming off to handle a foolish request from a timer
or human or disk controller. There's of course latencies all
over the damn place but they can be assumed to be constants and
therefore cancel each other out or fixed in software (eg. sample
to sample fixed skew). THen there's A/D aperture and other rot...
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