Hi, John, I was speaking with Homin last week at the CASPER Hardware Porting Workshop hosted in Cape Town. He mentioned the Analog Devices 10 Gsps 12-bit ADC that I think is the same one Dan referenced. My recollection of our conversation was that the pricing was not so bad, but I could be conflating that assessment with a different ADC. In any event, I think future ADC boards will move to FMC (or FMC+) connectors. This will necessitate new host FPGA boards which is why the next gen CASPER toolflow emphasizes ease of porting new boards to the CASPER toolflow. It’s an exciting upgrade in processing capacity, but it’s still early days. Definitely fodder CASPER Workshop discussions! :)
Dave > On Aug 6, 2018, at 20:25, Dan Werthimer <d...@ssl.berkeley.edu> wrote: > > > > hi john, > > how many bits do you need? > > here are some possibilities: > > a) > if 4 bits, then homin's 15 Gsps adc board might be a good choice. > > b) > if 12 bits, and you don't mind breaking the band up into 2 GHz chunks, > then this $9K RFsoc eval board has eight 12 bit 4Gsps ADC's and a big FPGA to > channelize and packetize: > https://www.xilinx.com/products/boards-and-kits/zcu111.html > > c) > if 12 bits, and you want to digitize the whole band at once, > you might consider AD's new 10.25GSps 12-bits ADC with a 6.5GHz bandwidth: > http://www.analog.com/en/products/analog-to-digital-converters/standard-adc/high-speed-ad-10msps/ad9213.html > but it's pricy, data sheet is preliminary, and i don't know if anybody has an > FMC board with this chip yet. > http://www.analog.com/en/about-adi/news-room/press-releases/2018/5-21-2018-12-bit-10-point-25-gsps-radio-frequency-adc-sets-new-performance.html > shows the pricing as $3,652.49 in 1000 piece quantities. > > > best wishes, > > dan > > > > > > > > >> On Mon, Aug 6, 2018 at 11:13 AM, John Ford <jmfor...@gmail.com> wrote: >> Hi all. We're interested in wideband moderate performance spectrometers. >> Something that can digitize 2 (or 4) polarizations at at ~ 8 to 10 GS/s, and >> provide ~4K channels, full stokes, with a moderate dump rate (1 GB/sec or >> less). >> >> We could use 8 ROACH-2/ADC-5GS VEGAS-style spectrometer blades, 2 for each 4 >> GHz polarization and sideband. (simultaneous upper and lower sidebands are >> required) >> >> Or we could move on to newer ADCs and processing boards, and get the full 4 >> GHz from each polarization in one go. I think this is preferable, for many >> reasons. >> >> The key here, I think, is the ADCs that may have come to market (or to the >> casper community) since VEGAS was built. I know Homin Jiang and Jonathan >> Weintroub's groups are working on wideband ADCs and integration with FPGA >> boards. >> >> So the questions that I am posing are: What ADCs and hardware configuration >> would you choose for a minimum-effort maximum-effect project to be built and >> deployed in the near future? What projects could we assist with in getting >> the next fast ADCs developed and tested? >> >> Is this all fodder for the CASPER workshop discussions? >> >> John >> >> -- >> You received this message because you are subscribed to the Google Groups >> "casper@lists.berkeley.edu" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to casper+unsubscr...@lists.berkeley.edu. >> To post to this group, send email to casper@lists.berkeley.edu. > > -- > You received this message because you are subscribed to the Google Groups > "casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu. > To post to this group, send email to casper@lists.berkeley.edu. > <ad9213.pdf> -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To post to this group, send email to casper@lists.berkeley.edu.
