Thanks Francois. bummer. Avnet says no stock; need to quote, 60 unit min order. I haven't tried to contact Avnet for a quote.
Matt On Wed, 29 Feb 2012, 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]> 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). 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]> 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 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 John Many thanks, Tom -- I or me? http://www.oxforddictionaries.com/page/145 -- I or me? 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
