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DS30BA101: DS30BA101 Transformer Coupling

Richard Zarr
Expert 3040 points
Part Number: DS30BA101

Can someone provide a solution to modify the DS30BA101 EVM to use a transformer to couple to 100 ohm twinax cable?  The transformer is a requirement for the design - currently a 1:1 with a center tap on the cable side.  But we are open to suggestions.

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    TI__Mastermind 43795 points

    Hi Rick,

    Adding a transformer on the SMA inputs is possible, but it would likely require a seperate diaughter board that sits between the input SMAs on the EVM and the input twin-ax cable itself.  From a schematic perspective I would just insert it at the SMA location.  You would just need to be careful to ensure the transformer bandwidth is enough for the application.

    Regards,

    Lee