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ADF4355-3 programming.

Question asked by dmitriy00 on Jun 12, 2017
Latest reply on Jul 12, 2018 by dmitriy00

Hello. Could someone answer the following about the ADF4355-3 synthesizer:

1. If I want to use software power down mode after I programmed the IC, is there a register sequence to get back to power on mode or do I just flip the bit back? Is it possible to run the initialization described on page 29 of the datasheet with the power down bit set, i.e. initialize into power down mode?

2. What are the guidelines for setting the timeout in register 9? The programming tool sets it to 32. There is no explanation why. What is this timeout used for?

3. What are the guidelines for setting Fractional-N Lock Detect Count? The tool sets it to 4096 by default.

4. What is the meaning of the Fractional-N Lock Detect Precision setting?

 

Thanks in advance.

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