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AD9371 internal sysref, 3.3V I/O

Question asked by mike.nunya on Jan 3, 2017
Latest reply on Jan 4, 2017 by sripad

According to the user guide, it is possible to enable an internal sysref. I have two questions about this:

 

1) If I use the internal sysref, that means I can leave the external sysref pins disconected?

2) Without a sysref, I understand that the TX and RX portions of the transceiver can be misaligned. I assume that the RX portions are still aligned (RX1 & RX2)?

 

I also have a question about the 3.3V GPIO: If I don't plan on using it, can I leave the 3.3V supply pins open or grounded and completely eliminate the need for a 3.3V supply?

 

Thanks!

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