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ADRF6755  jitter  At the noise floor

Question asked by XJLee on May 12, 2017
Latest reply on May 18, 2017 by LKelly

Hi ,

When I debug ADRF6755's PLL, I meet two issues . When I configure  Frac-N PLL output 2400MHz (PFD =40MHz):

1) The random spurs is  dynamic .

2)  The noise floor  fluctuate .

 The issue  is described in accessory document . I  can't resolve and make it clearly. Please give me a help.