ADL5390 input impeadance

Hi there,

I am trying to optimise the input match for this device when used with a third party Quadrature splitter operatinng from 100-900MHz

The data sheet has a plot of the input match with and without the 66.5Ohm shunt resistor used to match to the internal 250ohm shunt resistor.

the supplied S paramters for this device don't match the data sheet see below.

The question is is the Datasheet wrong or are the supplied S parameters wrong or am i doing something wrong with my simulation?



  • 0
    •  Analog Employees 
    on May 6, 2015 3:26 AM

    Figure 28 includes the evaluation board trace.  That's probably why there's a resonance at 1800 MHz. 

    I think the s-param data on the web has the evaluation board traces de-embedded. 

  • 0
    •  Analog Employees 
    on Aug 2, 2018 3:01 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin