I have two questions about ADF4351 fast locking and need your help.
1, as mentioned in the section of FAST LOCK EXAMPLE in the datasheet,
Fast Lock Timer Value = (VCO Band Select Time + PLL Lock Time in Wide Bandwidth) × f PFD /MOD
in my application, the frequency will work and hop in Integer-N mode, how could I set MOD value in above function? is "1" ok?
2, also in this section, the example gives lock time of 60us. But in the function,
VCO Band Select Time = 20us
PLL Lock Time in Wide Bandwidth = 20us
what does PLL Lock Time in Wide Bandwidth mean? and what does the rest 20us (60us - 20us - 20us) stand for?
Appreciate for your kindly help and guide here!