Can I connect two transformers to the D1/D2 pins on the ADM2487?

I’m planning to use both ADM2484 and ADM2487 on my RS485 expansion module (and eventually to the baseboard).  I need an easy way to generate the second isolated supply for the second transceiver.  Do you, or Analog Devices, have a recommendation for this?  For example, is there a reference design for the ADM2487 that provides a second output winding on the driven transformer?  Or can I connect two transformers to the ADM2487.

  • 0
    •  Analog Employees 
    on Feb 19, 2014 5:07 PM

    Hi tmain,

    The ADM2487E integrated oscillator driver was designed for use with one external transformer only.

    Alternatively -

    I can suggest that you use the ADM2587E, which is a fully integrated signal and power isolated transceiver.

    The ADM2587E includes an integrated isolated dc-to-dc power supply, which eliminates the need for an external dc-to-dc isolation block.

    Regards,

    Richard Anslow