I did some measurements on Zynq-7000 with AD-FMCOMMS3-EBZ board and i measured the max power is around -9dbm at 0dB attenuation on TX path.As per the datasheet the the max output power is +8dBm.
Pls help to confirm....
Datasheet is correct. You should see about +8dBm at Tx output which will vary a few dB over frequency (datasheet specifies the power at a few different frequencies). Output structures will attenuate Tx output power which is the case on this evaluation platform.
AD-FMCOMMS3-EBZ Specifications [Analog Devices Wiki]
Let me ask a question and clarify the subject. As tlili mentioned, output power of AD9361 is around +8dBm, and Kishore measured corresponding output power at the output of AD-FMCOMMS3-EBZ board as around -9dBm. How do we explain 17dB difference by output structures on the board?
P.S: Insertion loss of the RF transformer used on this board is less than 2dB.
AD-FMCOMMS3-EBZ is a wideband evaluation platform and was not optimized for any particular frequency. In addition to setting the attenuator to 0dB attenuation the user should ensure that the Tx data is full scale and that digital attenuation is not used in order to get maximum output power.
If you seek performance that is closer to the datasheet performance please use AD-FMCOMMS2 which is optimized for 2.4GHz operation.
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