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LMH0344: Layout question

AJ Cheng
Genius 3615 points
Part Number: LMH0344

Hello.

Our customer has a project used LMH0344 have a layout question. We have a different layout with EVM as shown below. And need to know what effect will it have?

About the SDI trace impedance is 75 Ohm? Right? Thanks for help~

From Our EVM layout. Under Conn5 are covered by copper. 

Our customer layout. Under BNC1 are blanking.

  • 0
    TI__Guru* 93670 points
    Hi AJ,

    1). Trace impedance from BNC to return loss passive components is a controlled-75-ohm impedance.

    2). We provide void - meaning ground or VCC relief - under passive components. This reduces capacitance due to the passive component pads.

    Regards,,,nasser