I am using ADF4355 chip. However, it has not been able to produce an accurate frequency.
And, Digital Lock detect is not asserted, so LED(MUXOUT) is turn off. When I set that MUXOUT is DVdd, LED is turned on.
My condition :
Ref_freq : 122.88MHz
VCO : 4915.2MHz
RF A/B out : 2457.6MHz
Result : 2391.325MHz
Could you guide how to resolve this issue?
I use ADF4355 GUI software and ADIsimPLL.
Below is my register setting value and loop filter image.
Actually, I use C1 = 750pF, C2 = 10nF, C3 = 330pF, R1 = 1.4K, R2 = 2.94K .