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Question about AD9910, external PLL loop filter

Question asked by JongWon on Feb 20, 2013
Latest reply on Feb 20, 2013 by KennyG

Hello. I'm using AD9910.

PLL's phase noise seems like red line under graph. (and also as your datasheet. in case of using internal PLL)

But I want to that blue line phase characteristics.

제목 없음.JPG

How can I do that?

I changed some values of R1, C1, C2, but don't have any effect.

 

Thank you.

Sincerely.

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