AnsweredAssumed Answered

The problem with the frequency tuning in ADF4351

Question asked by Dmitry47 on Sep 12, 2013
Latest reply on Jan 6, 2014 by rbrennan

Tell me please.

I'm developing a device using the ADF4351 frequency modulation mode. 15 KHz deviation, the rate of 22kHz (48mks on the same frequency).

Faced with the problem of long-term lock in frequency tuning.

To debug using the debugging board EVAL-ADF4351EB1Z. Configuration registers have taken out of the program, all of the default settings, changing only the frequency.

See photo 1, it shows the nature of the problem:

 

See photo 1, it shows the nature of the problem:

1.jpg

 

Photo 2 good job, it's a different frequency synthesizer.

2.JPG

 

I can take a picture with a spectrum analyzer.

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