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GNDX pin of the oscillator

Daisuke Yamazaki
Prodigy 140 points

I have a question about how to connect GNDX pin of the oscillator.
According to the design guideline, GNDX is directly tied to ground.
However, in the schematic of the evaluation board GNDX is not tied to so.
Which connection is better?

  • 0
    TI__Mastermind 22580 points
    Hello Daisuke,

    I have asked my colleague to take a look at this post. You should hear back from him pretty soon.

    Thanks,
    Sai
  • 0
    TI__Guru**** 244380 points
    Hello Daisuke

    As given in the design guidelines "Early designs may show the crystal load capacitors and GNDX2 pin connected only to each other without a connection to digital ground. Either is a valid configuration, however the low-impedance connection to the digital ground helps isolate the circuit from external system noise sources."

    Regards
    Amit