I want to sweep several frequency using the PLL adf4351. integer-N mode.
When I power up, the PLL is locked to the right frequency,
but once the MCU writes another value (the second frequency is near to the first) to Register 0, the PLL lock out right away.
Could anybody help me?
Check your register settings with the evaluation board GUI.
Can you tell me does the frequency remain at the original, or does it go somewhere else?