As per the AD9364_Reference_Manual_UG-673.pdf, in Page 67 it is mentioned as the TX port differential load impedance should be 50Ohms. In the stackup sheet provided on Page 108 the trace widths are provided for 100 Ohm differential impedance which has 8 mil trace width with 6 mil separation. Even in the 08_037516b_Gerber files, if we measure the trace widths of TX port ( Pin M7/M8 and M9/M10) the trace widht is 8 mils with 6 mil separation.
Reference manual and the Gerber files are attached.
Please clarify whether the TX port impedance is 50 Ohm differential OR 100 Ohm differential