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Altera_Forum's avatar
Altera_Forum
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15 years ago

IQ down converting speed

I need some advice on device speeds. I want to implement a simple IQ down converter. A simple test taking an input signal from an A/D (6 clocks to read), & mixing it with an NCO, implemented in a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

If 300MHz processing means 6 channels x 50MHz each then you can process as many as suits your final speed. You don't have to process all in parallel or all in serial.

It is a case of resource-speed trade-off.

For stratix II I believe 200MHz is the comfortable limit. for stratix IV it could be 350MHz. So stratix III may in between.

For very fast sections at io you can use ddio or serdes as a speed bridge

I am not sure about cyclone speed.