mixer AD8342 in Baseband

Hi I would like to use this mixer ( AD8342) to use th IF port with a baseband signal with a bit rate of 9600 bauds

Is it possible to do this. because I used the evaluation board, applying th IF port adaptation as in Figure 59 (Low frequency application) of datasheet?

and then using th OP amp AD8130 to change the balanced output to single-ended 

And still doesn't work.

Does anyone an idea how can I do it?

  • 0
    •  Analog Employees 
    on Nov 30, 2017 1:38 AM

    Hi, Crabam,

        Would you please elaborate what you're trying to achieve (frequency range, modulation, sidebands, etc.), so that we can more appropriately suggest a solution?

        To use the AD8130 with the IF outputs, you must match the common-mode dc voltage levels.  The dc level at IF pins is given by:

          Vif(DC) = Vcc - Iif(DC)

    At Vcc=5V and Iif(DC) ~= 28 mA, Vif(DC) ~= 4.44V, which is much higher than that allowed by the AD8130's inputs with a 5V supply.  The AD8130 would need to operate from a higher Vcc to accommodate the AD8342's IF DC levels.


  • 0
    •  Analog Employees 
    on Aug 2, 2018 3:59 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