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About AD9361 LNA Input Dias

Question asked by mingb19 on Jun 21, 2017
Latest reply on Jun 22, 2017 by sripad

Dear Support Engineer,


In AD9361 Reference Manual, it states that "The LNA input pins have DC bias (~ 0.6 Vdc) present on them and may need to be ac-coupled depending on the common-mode voltage level of the external circuit". First of all, I can not find a pin named Vdc on the data sheet, so what is the Vdc value on AD-FMCOMMS3-EBZ eval board? I use a signal generator to send a 300MHz single frequency to the AD9361 receiver - does the signal from the generator needs to be AC biased like (-2dBm to +2dBm), or should it be (0 to +4dBm)?


Thank you for your time,