ADF4001: Power supply requirements for Vp and AVDD

Document created by analog-archivist Employee on Feb 23, 2016
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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 Vp?


It is not acceptable for the Vp pin to be at a lower voltage than AVdd. Vp
should always be greater than Vdd as there are diodes between these supplies.
The diodes are to prevent Vp going below Vdd. So Vp should not be removed
before Vdd.