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suggestion Audio DSP PCI Card - software radio.
by Unknown on May 10, 2004 |
Not available! | ||
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You are targetting frequencies up to 100 kHz, but AD6644 and AD9244 and comparable 14 bit converters reach 65 and more MS/s. This is enough to cover LW, MW, SW with excellent SNR and opens the way to many other exciting projects. FPGA may do similar filtering as AD6224. What I would like to actually suggest is that if you have about 20 free FPGA IOs and some space left on the board, you may place AD9245 + quartz + power supply + input transformers as optional elements - standard board would contain only the traces and pads. Another suggestion is to use Xilinx Spartan-3 family. Would be a good way to verify whether they are really as good as they claim :-) Best regards, -- Tomasz Motylewski |
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suggestion Audio DSP PCI Card - software radio.
by Unknown on May 11, 2004 |
Not available! | ||
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t.motylewski at bfad.de wrote:
You are targetting frequencies up to 100 kHz, but AD6644 and AD9244
and comparable 14 bit converters reach 65 and more MS/s. This is enough to cover LW, MW, SW with excellent SNR and opens the way to many other exciting projects. FPGA may do similar filtering as AD6224. What I would like to actually suggest is that if you have about 20 free FPGA IOs and some space left on the board, you may place AD9245 + quartz + power supply + input transformers as optional elements - standard board would contain only the traces and pads. I agree with you, we will see.
Another suggestion is to use Xilinx Spartan-3 family. Would be a good
way to verify whether they are really as good as they claim :-) What about 5V I/O tolerance?
Best regards,
--
Tomasz Motylewski
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