ADF4158 eval SW hidden feature

Document created by analog-archivist Employee on Feb 23, 2016Last modified by analog-archivist Employee on Aug 10, 2016
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If I observed it well, your ADF4158 software has a small error. On Figure 41 of
the data sheet of ADF4158 it is shown that the Ramp status can be output via
the Mux-Out. After setting this in the software, something will be written only
to Register 0 , and not in Register 4 as indicated (especially Register 4 DB
[25: 21]). I would need the signal to trigger when recording. Can you confirm
this error? If yes -> do you have a workaround or solution?


The solution is to:
• Double-click the black ANALOG DEVICES (bottom, center of the application).
• This will reveal some hidden features – including the PLL Testmodes option.
The option contents Register 4, DB[25:21].
• Setting this option to 03. Ramp comp to Muxout will give the required

Note: Muxout must also be set to Ramp Status.