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Altera_Forum
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7 years ago

DE2-115 board with DCC AD/DA daughter card

Hi all. I am trying to implement a DDS with altera DE2-115 board. I want to use only the DAC of the daughter card. My codes run, no errors, in modelsim I can see the input thats gonna go in th...
Altera_Forum's avatar
Altera_Forum
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7 years ago

Hi again

I am finally getting some output in the oscilloscope, I had to make some adjustments in my code. But I find the DAC output signal is better for lower frequency, the signal degrades for higher frequencies. I have seen this in the case of the signals generated in the demo version too. The DAC spec mentions the max clock can be 275 MHz, doesnt mention any minimum. I tried doubling the DAC clk input (100MHz), doesnt improve much.

Can you suggest any way which can improve the signal in higher frequencies?

Thank you so much!