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ADS1292: RLD Schematic design issue

Hailey Chen
Expert 3080 points
Part Number: ADS1292

Hi team：

 

       My customer use ADS1292 in their ECG module. They want to use PLDINV pin but not use amplifier，so can you kindly explain how to deal with PLDINV  PLDOUT and PLDIN/PLDREF pin .

Best Regards.

  • 0
    TI__Mastermind 19815 points

    Hi,

    Please refer to datasheet figure 40, the description under Figure 40 and page 57.

    "If the RLD function is not used, the amplifier can be powered down using the PDB_RLD bit."

    Then, if depends on what customer want to do with RLDINV and RLDIN/RLDREF, they have options to either connect or disconnect RLDxP or RLDxN switches. If they don't want to feed any ECG signal to RLDINV, they can disconnect all the RLDxP and RLDxN., or vice versa.

    Datasheet Page 4 Pin Functions (continued)

    describe what to do to RLDINV and RLDIN/RLDREF if not use i.e. tie to AVDD

    Thanks.

  • 0 in reply to ChienChun Yang
    TI__Mastermind 19815 points

    Hi,
    Since I did not hear back from you, I believe my suggestions answered your questions.
    I will close this post and if you have any pending questions, feel free to post them here or open a new thread.
    Thanks and have a great day!