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ADF4351 Lock time

Question asked by FreddyS on Jul 24, 2014
Latest reply on Apr 10, 2015 by rbrennan

Dear Supporter

I plan to use teh ADF4351. I need an LO locktime of <60uS.

1-  if I use a RFE OSC of 10MHz with R=1, what will be the total lock time for FREQ ERR <1KHz ?

Since the total lock time is built up from the auto Cal time + Loop filter lock time, in case of :

  •   REF OSC= 40MHz
  •   R=4
  •   PFD=10MHz
  • Loop filter BW=1MHz

2- What will be the  autocal time

3- What will be the estimated lock time to FREQ ERR of <10KHz and 1KHz.