400 Mb/s ADC

If you want to get some real speed, then maybe something like the Atmel
TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (Gspl/s) could be
of interest.
Going up to Giga Samples per second, would make your problem worse though
:-)

http://www.atmel.com/dyn/products/da...?family_id=611

I think we will try atmel...Jeff

The fastest slots on a PC Mainboard are the memory expansion slots.
It's an easy to design hardware interface and if you use a server
mainboard with multiple memory channels you get a hell lot of
bandwidth. I remember seeing a cryptoaccelerator on a DIMM somewhere
and SUN used to place graphics boards in memory slots.
hmmm...interesting idea

Ulf Samuelsson wrote:


If you want to get some real speed, then maybe something like the Atmel
TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (Gspl/s) could be
of interest.
Going up to Giga Samples per second, would make your problem worse though
:-)

http://www.atmel.com/dyn/products/da...?family_id=611


When did Atmel start making flash ADCs? Can someone actually buy these
now? How much do they cost?

see:

http://dustbunny.physics.indiana.edu/~paul/hallDrd

for our "merely" 250 Msps particle physics project.


Paul Smith
Indiana University Physics

"Paul Smith" wrote in message
...
Ulf Samuelsson wrote:


If you want to get some real speed, then maybe something like the Atmel
TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (2 Gspl/s)
could be
of interest.
Going up to Giga Samples per second, would make your problem worse
though
:-)

http://www.atmel.com/dyn/products/da...?family_id=611


When did Atmel start making flash ADCs? Can someone actually buy these
now? How much do they cost?

Yep, have been around for quite some time.

see:

http://dustbunny.physics.indiana.edu/~paul/hallDrd

for our "merely" 250 Msps particle physics project.

My guess is maybe $500 for the 1 G sample 8 bit devices.
2-3 x the price for the 2 G sample 10 bit device.
This is for commercial spec, mil spec devices are more expensive.

How many do you need?

--
Best Regards
Ulf at atmel dot com
These comments are intended to be my own opinion and they
may, or may not be shared by my employer, Atmel Sweden.




Paul Smith
Indiana University Physics

"Ulf Samuelsson" wrote in message
...

If you want to get some real speed, then maybe something like the Atmel
TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (Gspl/s) could be
of interest.
Going up to Giga Samples per second, would make your problem worse though
:-)

Maxim also has the MAX104 (1 Ghz,) and MAX108 (1.5Ghz) and other lower
speeds in the range 500Mhz and up.

In article , Jeff Peterson wrote:
we will take about 64K samples, then can pause while processing...
however all the time we are pausing we are losing data. so we do want to
keep the duty cycle up. 50% duty cyle is not a problem. 5% would be.

It sounds like you *really* want to do the FFTs on PCs, rather than on
an outboard DSP. (for your application that might make sense, as you're
only building one or a few of these things, and software development
will be hugely easier) You might try "striping" the data across
multiple PCs. After the ADC, block the data into 64K "packets", and
have 2 or 3 links to FPGA "NICs" that receive blocks of 64k samples
(plus maybe a sequence number) and DMA them over PCI.

Even if you do try to convert to SCSI or Fibre Channel and use standard
adapters, you might still want to consider the striping idea.

--
.................................................. ....................
Peter Desnoyers (617) 661-1979
162 Pleasant St.
Cambridge, Mass. 02139

Jeff Peterson wrote:
The fastest slots on a PC Mainboard are the memory expansion slots.
It's an easy to design hardware interface and if you use a server
mainboard with multiple memory channels you get a hell lot of
bandwidth. I remember seeing a cryptoaccelerator on a DIMM somewhere
and SUN used to place graphics boards in memory slots.

hmmm...interesting idea

here's a reasonable place to start digging:

http://citeseer.nj.nec.com/leong01pilchard.html

John

On Fri, 21 Nov 2003 08:29:08 -0800, Paul Smith wrote:

Ulf Samuelsson wrote:


If you want to get some real speed, then maybe something like the Atmel
TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (Gspl/s) could
be of interest.
Going up to Giga Samples per second, would make your problem worse
though
:-)

http://www.atmel.com/dyn/products/da...?family_id=611


When did Atmel start making flash ADCs? Can someone actually buy these
now? How much do they cost?

see:

http://dustbunny.physics.indiana.edu/~paul/hallDrd

for our "merely" 250 Msps particle physics project.


Paul Smith
Indiana University Physics

One of the articles listed a price of $795 for the 2 Gspl/s converter in 1000's

Peter Wallace