On 4/11/2015 8:40 PM, Tim Williams wrote:
"rickman" wrote in message
...
They often talk about "proprietary compensation stages" or something to
that effect, suggesting that simply churning out a number in the
conventional method isn't as simple when you're doing it at *that*
rate.
Maybe this is something they were missing, and hence why flash was the
only option, back in the day?

Not sure why you limit this to pipelined SAR. Subranging also has to do
multiple steps which can be pipelined or not. But more importantly,
there can be some "issues" at the edges of a range which require
correction. In face, subranging flash converters are also referred to
as pipelined... a rose by any other name...

Six of one, a half-dozen of the other...

The LT part John mentioned must be such a mixture, with a pipeline delay
less than NOB. Of course, it could always be 100% flash with serdes
pipelines, but... why?

Subranging, yes, that's a good word for it.

I'm not sure what you are saying. They are clearly pipelined, but flash
and not SAR.

--

Rick