Post Go back to editing

AD9520-4 EVB's phase noise is too high

Hi;

We have a evb of ad9520-4, we use a 10MHZ ref from R&S spectrometer and config the evb to output a 50MHZ signal. According to ADIsimCLK, we should got a phase noise around -130dBc/Hz at 50KHz offset, but accually we got only -105dBc/Hz. The loop components is as the evb shipped, we didn't modify them, and cp current set to 600uA.

Could you please give some advice to improve it?

THX!

Donald

Parents Reply Children
No Data