I'm confused on the setting of the BACKLASH to the PLL.
I have a question, about the anti-backlash value to PLL.
Checking some datasheets, "AN-873" and other discussion,
as following I understand setting the ABP value,
recommended or fixed value,
Fract-N PLL:wide pulse(e.g. 6ns )
Int PLL:narrow pulse(e.g. 3ns)
However, for each device, there is a difference of selectable values or fixed value.
ADF4360-x(Int PLL) is selectable ABP values,
ADF415x(Fract-N) is fixed 3.0ns >>> not wide pulse?
Can i set,select any values without restriction?
I do not think so!
I want to know whether which value of setting is correct.
What is correct choice values ??and calculation method for BACKLASH?
And, which is important parameters to select a ABP value?
Fract-N PLL or Int PLL?