On Tue, Aug 5, 2008 at 2:45 PM, Chris R. Anderson <[EMAIL PROTECTED]> wrote:
> Brian -- Thanks for the suggestions on the FPGA. We've been using the
> Altera parts up here for several years now, so our guys are definitely
> familiar with the development process. Personally, I'm leaning towards the
> EP3C16 to help keep the costs down. We're probably going to use the AD9862
> ADC/DAC (which is basically the same thing used on the USRP), which retails
> for $57.75 on Digikey.
No problem, and sounds good. It definitely is pretty darn cheap for
the resources you get.
As for the ADC/DAC, do you plan on trying to do the full 64MSPS
processing? How much bandwidth are you looking to process?
With trying to keep costs down, using the same AFE as the USRP seems
like it isn't that good of an idea mainly due to the fact that it is
built on old technology and costs so much.
MAXIM makes a nice full duplex AFE that has a couple of slow-speed ADC
and DACs as well for VCTCXO's, AGC, etc. It can be found here:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5163
10-bit resolution for the ADCs and DACs, and only a 45MSPS part, but
for $16 in small quantities (less than $10 in higher) it should still
be enough for plenty of bandwidth.
Brian
