AnsweredAssumed Answered

HMC778 Integer Mode Freq Tuning Equation

Question asked by Feruz on Feb 20, 2018
Latest reply on Apr 9, 2018 by MRichardson

As shown in Functional Diagram VCO Freq always divided by 2 and then optionally can be divided by 2 again. Then equation 5 is not correct. There is no addition "divide by 2". Am i right?


The main question is i am trying to setup HMC778 in integer mode on 10001 MHz with this parameters, but cant obtain result:
Fxtal = 10 MHz

R = 40 (dec)
k = 2 (RF divide by 2 is on)
Nint = 10001 (dec)


Setup sequece is:
    .db     0x02, 0x00, 0x00, 0x28    
    .db     0x06, 0x00, 0x1F, 0x3F 
    .db     0x08, 0x03, 0x6F, 0xFF   

    .db     0x09, 0x80, 0x30, 0x61    
    .db     0x03, 0x00, 0x27, 0x11