Re: [Discuss-gnuradio] Re: Low cost hardware option

[Marcus D. Leech]

On 01/14/2011 04:28 PM, Charly Lima wrote:
> What about using an ASIC instead of the FPGA for the DDC, for example AD6652
> from Analog Devices, and connect that directly to the USB 3.0 Controller? 
> Might
> be cheaper?
>
>   
The AD6652 isn't exactly cheap, at $45.00 apiece.  But I had also
considered that as a viable
  option.

> <http://www.analog.com/en/digital-to-analog-converters/digital-updown-converters/ad6652/products/product.html>
>
> * ADF4350 for the Downconverter
> * AD6652 ADC and DDC
> * USB 3.0 Controller
>
> You can always put a USB 3.0 Card in a PCI Slot if your Computer if it does 
> not
> already have USB 3.0. It s not expensive. 
>
>   
YOu'd need a quadrature demod chip as well, like the ADL5387, which
takes in a 2XLO
  (from the ADF4350).

Seems there's lots of ways of doing this.  A cheaper high-speed ADC +
cheap FPGA, or a more
  expensive ADC with built-in DDC and CIC decimator, etc.




-- 
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org