400 Mb/s ADC

[John Williams]

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

 

[Peter C. Wallace]

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/datasheets.asp?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

 

[Ray Andraka]

It doesn't necessarily have to be a big FPGA, it depends on the size of the FFT
as well as the required latency and throughput. Size can also be reduced by
working with mixed fixed and floating point. I've done a number of FFT designs
in FPGAs, some of which are in rather small devices. There is a 4K point example
in an old 5v Virtex shown on the gallery page of my website.


dMon wrote:

... throughput similar to what RAID drives do. As for FFT's they
are done way faster in a FPGA than in any processor including DSP
processors. The only problem is the cost of the FPGA if you need
really big FFT's (4K 24 bit wide). The card I was working on was
...

--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com

"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759