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Pin11 of HMC799

Question asked by yezhou on Dec 21, 2017
Latest reply on Jan 25, 2018 by yezhou

hi,

looking at the datasheet of HMC799, the Pin11 is N/C on Functional Diagram and Schematic, but on PCB layout, pin11 is connected a capactor C11 to GND.  

i designed a PCB without C11, the output returnloss is very poor.  is it C11 necessary?

 

thanks,

ye

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