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AD9361 - EXT LO voltage levels

Question asked by lhsantos on Sep 23, 2014
Latest reply on Sep 24, 2014 by WTaylor

Hi everyone!

 

 

I was studying FMCOMM5S schematic and I realized that signals from U307 (13617CF-S02QFN)  who are connected to RX_EXT_LO_IN and TX_EXT_LO_IN in AD9361 (U101 and U201) are 3.3V voltage logic instead of 1.8V.

 

If I'm not wrong, AD9361 is powered from 1.8V and 1.3V sources. Does anyone know if my understanding is correct? Can it damage AD9361 transceivers in this case?

 

Thank you in advance!

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