I am Alex, a new comer in ADI. I used ADIsimPLL V3.30 and had some queries about it.
I designed a loop filter with ADF4002, and there is a parameter of 1/f PN found. The screenshot is as below
Then I tried with ADF4350, there also is 1/f PN with different value. The screenshot is as belwo:
I also tried with ADF4116, but there is no 1/f PN any more...
There are some queries puzzling me.
1, what does 1/f PN mean? Why do ADF4002 and ADF4350 have it, while ADF4110 does not?
2, what factors determine the 1/f PN? Is it determined by the chip itself?
3, has it been calculated in the Total PN?
Thanks in advance for your kind help!