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L138 / C6748 LC Dev kit PLL pins

Dean Hofstetter
Expert 2585 points


I'm reviewing the LC Dev kit schemo as a double check against a custom board we are working on.  According the the L138 datasheet (section 5.6.1), you should have a special filter circuit on the PLL pins.  The LC Dev kit schemo does not follow this recommendation, and uses a different filter circuit.

Which circuit is "more" correct, L138 Datasheet  ..or..  L138 LC Dev schemo?

 

-Dean

 

  • 0
    TI__Guru* 84515 points

    Dean

    The datasheet is correct and should be followed. On the LCDK board, we found that this was not implemented on the beta boards, so the productions boards was suppose to fix this. If it was not fixed in the production boards, we will post a note/errata on the LCDK wiki as needed.

    Thanks for catching this.

    Regards

    Mukul