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AD9914 evaluation board's phase noise measurement.

Question asked by mkara on Dec 16, 2014
Latest reply on Feb 14, 2017 by mkara

Hello,

Phase noise curves given in the data sheet of AD9914 (Figure 19) show that the internal PLL's Loop Bandwidth is about 30 KHz. But, the loop BW of evaluation board i am testing is about 200 KHz. is it possible to get 30 KHz loop BW when i use internal PLL? Why are the phase noise curves given in data sheet different than i am measuring with 200 KHz loop BW? thank you.

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