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About ADF5355 pin5 AVDD on AD-FCOMMS5

Question asked by kenton.chu@anstek.com.tw on May 7, 2015
Latest reply on Jul 13, 2015 by tlili

Dear Sir,

 

We just found the U302, ADF5355, pin5 AVDD is floating on schematic of AD-FCOMMS5. But, it's connected to AVDD1 (3.3V) on EV-ADF5355SD1Z_RevA. Would you kind to help to clarify it ? And why need to reserve R21,0 ohm, on AVDD1 ?

Thanks a lot.

 

 

 

ADF5355onS5.png

ADF5355onEVB.png

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