Electronics > RF, Microwave, Ham Radio

ADF4360-0 cannot lock

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WOWOWOWOWO:
My phase detection frequency is 10KHZ, the output waveform of R DIVIDER OUTPUT is a pulse with a frequency of 10Khz, DVDD is vdd, and N DIVIDER OUTPUT is a pulse with a frequency close to 20KHZ. The output of LOCKDETECT is low. I don’t know where the problem is. , Please give me some advice, |O |O |O

WOWOWOWOWO:
Now the voltage of CP is 0V |O |O |O

joeqsmith:
You provide very little info.   Post your schematics, software interface and the simulation files. 
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Include a few pictures of the construction as well.

WOWOWOWOWO:
ok，thanks.The schematic diagram quotes the classic example in the manual, and the red part uses the balun matching output in Figure 2, and the rest of the conditions are as mentioned above.
My phase detection frequency is 10KHZ, the output waveform of R DIVIDER OUTPUT is a pulse with a frequency of 10Khz, DVDD is vdd, and N DIVIDER OUTPUT is a pulse with a frequency close to 20KHZ. The output of LOCKDETECT is low.

WOWOWOWOWO:
Sorry for using the forum for the first time, I don’t know how to describe clearly :-[ :-[

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