• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 20 subscribers
  • Views 102 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LMX2492: PFD_DLY Reserved

Luis Diaz Gonzalez1
Prodigy 30 points
Part Number: LMX2492

Hello,

I am using PFD_DLY = 1 and the performace in good, but Is good idea set PFD_DLY=0 (Reserved) to reduce (a bit) the pull-in time?

What means PFD_DLY=0?

 

Thank you in advance

  • 0
    TI__Guru* 84520 points

    HI Luis,

    PFD_DLY is an added delay in the phase detector, a proper PFD_DLY will help reduce spurs in a fractional channel. However, the delay may degrade phase noise. 

    You can play around PFD_DLY value in order to get the best phase noise and spurs performance.