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AFE5808A: Question for multiple AFE5808A data output synchronization problem

Jacky Wang(QD)
Genius 10820 points
Part Number: AFE5808A
Other Parts Discussed in Thread: SN74AUP1T04

Hi Experts,

Our customer is using 8pcs AFE5808A in their system, and they want to check if we can ensure the SPI timing and configuration is synchronous, can we ensure that all ADCs output date is synchronous as well?

Thanks a lot.

  • 0
    TI__Genius 12025 points

    Hi,

    Thank you!

    We will reply your question very soon.

    Have a nice day!

    Best regards,

    Chen

  • 0 in reply to Chen Kung
    TI__Genius 12025 points

    Hi,

    How are you?

    If the customer concerns about when using multiple AFE5808A devices for SPI controls,

    yes, please take a look at the following Datasheet link:

    so the customer can use and receive one control for using multiple chips.

    AFE5808A datasheet page 45.

    The AFE5808A SDOUT buffer is tri-stated and will get enabled only when 0[1] (REGISTER READOUT ENABLE) is enabled. SDOUT pins from multiple AFE5808As can be tied together without any pullup resistors. Level shifter SN74AUP1T04 can be used to convert 1.8-V logic to 2.5-V/3.3-V logics if needed.

    Thank you!

    Have a very nice day!

    Best regards,

    Chen