[time-nuts] Really fast ADC needed

SAIDJACK at aol.com SAIDJACK at aol.com
Thu Oct 30 13:35:40 EDT 2014


He will use a beagleboard via bluetooth to absorb the data rate  hahaha.
 
Pipedream.
 
 
 
In a message dated 10/30/2014 10:32:58 Pacific Daylight Time,  
ke9h.graham at gmail.com writes:

A  startup in Massachusetts named Hypres has/had exactly what you want.
It is  a cryogenic delta-sigma converter using some kind of quantum logic.
As I  remember it did about four bits per sample at up to 40 Giga-samples
per  second.
You have to run it submerged in liquid Helium.  But they would  sell you the
liquid
helium generator system as part of the  package.

http://www.hypres.com

But I can't get their web-server  to come up, today.  So either some IT
problems,
or they are out of  business.  If you Google them, they come up in the
search,  so
either they are still around, or were recent enough for Google to  remember.

I would like to see what you are going to use to absorb 120+  Gigabits per
second of
continuously streaming data.  It will take a  server cluster, doing nothing
else, if you
can figure out how to  parallelize the problem.

Good luck,
---  Graham

==


On Thu, Oct 30, 2014 at 10:55 AM, Sebastian Diaz  <sebas.diaz at gmail.com>
wrote:

> Fujitsu used to sell  ultra-fast charge mode interleaved sampler (CHAIS)
> ICs.
> These  have analog bandwidths of ~20GHz and sampling rates of 65 GS/s, 
8-bit
>  resolution, with ENOB 5-6.
>
> They pipe data out at  a max  128 bit* 500MHz (8 GB/s). How are you 
planning
> to digest this data  stream?
>
> Regards,
>  Sebastian
>
>
>
>
>
>
>
> On  Thu, Oct 30, 2014 at 7:23 AM, Alexander Pummer  <alexpcs at ieee.org>
> wrote:
>
> > pipeline  converter, but it needs as many clock period as the required
> >  bits, does he has the fast logic to deal with that amount of data?
>  > 73
> > KJ6UHN
> > Alex
> > On 10/29/2014 9:46  PM, Mark Sims wrote:
> >
> >> A friend of mine is looking  for an ADC that can do 5 bits at 20-40
> >>  gigasamples/second...  there is a timing related component to the
>  project.
> >> Any ideas of who makes a decent beastie?  It  needs to supply 
continuous
> >> data so things like a fancy scope  won't do...
> >>
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