ADF4001: FAQ

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ADF4001: phase difference between REF and RF output-2

Question If the output phase is different with the REF input phase, does it mean something wrong with the circuit? If the PLL is locked, the N*Fpfd (VCO output) should have the same phase with Fpfd…
ADF4001: Power supply requirements for Vp and AVDD

Question There are two power supplies for AVDD and Vp. If we shut down the Vp with AVDD still on, whether the part will be destroyed? If not, whether the current for AVDD will be larger than without…
Replacing ADF4001 with ADF4002

The ADF4001 and ADF4002 are very similar. When replacing the ADF4001 with the ADF4002, there is no need for any hardware or register value changes, however, the initialization sequences for the two parts…

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