Hi Matt,
The 2/4 Gsps version of the KatADC is based on an engineering sample
they gave us of a future 2/4 Gsps ADC that is based on the current 1.5/3
Gsps ADC - I think it is just an up-sampled version of the latter. The
indication from them was that this will be a future product that would
be available in a few months, but shortly thereafter Texas Instrument
bought out National Semiconductor and all future ADC development seemed
to be put on hold while they reorganized. Subsequently I was informed
that if there is a need for the part we must ask for it from our local
suppliers. The bottom line is that if enough people ask for it then it
might become available, otherwise I won't bank on it becoming a standard
product anytime soon.The bottom line is that if enough people ask for it
then it might become available, otherwise I won't bank on it becoming a
standard product anytime soon as other future ADC products that they
indicated to us would be available has been put on hold as well
(indefinitely).
Regards
Etienne
On 2/29/2012 9:04 AM, Francois Kapp wrote:
Hi Matt,
As far as we know the part has not been released commercially. I
suspect if it has not happened by now, it is unlikely to happen.
Regards,
Francois
On Wed, Feb 29, 2012 at 5:11 AM, Matt Dexter
<[email protected] <mailto:[email protected]>> wrote:
Hi all,
Is there any news w/ regard to the 4 GSPS version of the
KatADC using the uptested Natl Semi S7002396 ADC IC ?
Are people using them with Roach2 or other hosts ?
Cost ?
Thanks,
Matt
On Wed, 1 Jun 2011, Dan Werthimer wrote:
hi tom,
regarding pushing the KatADC from 2*1.5 Gsps to 4 Gsps:
it will be difficult, perhaps impossible, to
move 4 Gsps 8 bit ADC data through a single zdoc connector
into roach I. each of the 32 bit lvds lanes would
have to operate at 1 Gbit/sec, and we've never
tried that on Roach I. the most we've achieved
is 750 Gbit/sec per LVDS pair (using the 3 Gsps ADC board).
we've interleaved a pair of these 3 Gsps ADC's to
get 6 Gsps, using both ZDOC connectors on roach I.
on roach II, it should be possible to input 1Gb/sec
on each LVDS pair (you'd probably want to clock the FPGA
at 500 MHz and use DDR inputs), and then you
could get a 4 Gsps 8 bit ADC on each ZDOC connector.
best wishes,
dan
On 06/01/2011 12:11 PM, Francois Kapp wrote:
Hi Tom,
The 4GSPS version of KatADC is based on an "up-tested"
version of the
ADC08D1520, which is designated S7002396. It is unclear
whether this
will be released as a commercial product by National - a few
inquiries
to them couldn't hurt the cause. So far we have only
received the
one. The rest of the board is the same as the wide-band
front-end
KatADC version, which is the standard version that Mo builds
(i.e.
with BOM:
http://casper.berkeley.edu/__wiki/images/7/71/KATADC1.3BOM___HF_Build.pdf
<http://casper.berkeley.edu/wiki/images/7/71/KATADC1.3BOM_HF_Build.pdf>).
If you can extract a chip from National it should be a
simple matter
to get one built.
Regards,
Francois
On Wed, Jun 1, 2011 at 8:26 PM, Tom
Kuiper<[email protected] <mailto:[email protected]>> wrote:
On 06/01/2011 11:19 AM, John Ford wrote:
I'd like to know more about this ADC on the
hardware wiki page under
KatADC:
Dual 8-bit 2.0GSPS (or Single 8-bit 4.0GSPS),
National Semiconductor
ADC08D1520/S7002396 ADC, RF Front-End
However, the KatADC page doesn't seem to have
any information about it.
Can someone direct me to or send me information
about this?
Hi Tom. The data sheet's linked here:
http://www.national.com/ds/DC/__ADC08D1520.pdf
<http://www.national.com/ds/DC/ADC08D1520.pdf>
That's the original 3 Gsamp/s version. I was asking
about the 4 Gsamp/s
version (see the /S7002396?). This data sheet probably
predates the newer
version.
Cheers
Tom
From
https://casper.berkeley.edu/__wiki/KatADC
<https://casper.berkeley.edu/wiki/KatADC>
John
Many thanks,
Tom
--
I or me?
http://www.oxforddictionaries.__com/page/145
<http://www.oxforddictionaries.com/page/145>
--
I or me? http://www.oxforddictionaries.__com/page/145
<http://www.oxforddictionaries.com/page/145>
--
Francois Kapp
Sub-system Manager
Digital Back End
meerKAT
SKA South Africa
Third Floor
The Park
Park Road (off Alexandra Road)
Pinelands
7405
Western Cape
South Africa
Latitude: -33.94329 (South); Longitude: 18.48945 (East).
(p) +27 (0)21 506 7300
(p) +27 (0)21 506 7360 (direct)
(f) +27 (0)21 506 7375
(m) +27 (0)82 787 8407
--
Etienne Bauermeister
MeerKAT (Karoo Array Telescope) Project
SKA SA
3rd Floor, The Park
Park Road
Pinelands, 7405
South Africa
Tel: +27 (0)21 506 7361 (Direct)
Tel: +27 (0)21 506 7000 (Reception)
Fax: +27 (0)21 506 7375
Cell: +27 (0)82 339 4564
Square Kilometre Array South Africa (SKA SA): http://www.ska.ac.za
Square Kilometre Array (SKA): http://www.skatelescope.org
