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AWR1843AOP: AOP's D-CAP ground connection

mingyu OH
Prodigy 70 points
Part Number: AWR1843AOP

Tool/software:

HI

I would like to inquire about the connection of AOP D-CAP
When I connected the power D-CAP, I connected the GND to the common GND.
In the case of the AOP, I would like to know if there is a specific GND pin that should be paired with the power pin when connecting the D-CAP.

I look forward to your reply.
Thank you.

  • 0
    TI__Expert 5461 points

    Hi, 

    While there is no specific GND pin required when connecting the decaps, from the layout perspective, you should place the caps as close as possible to the power pin and connect the GND side to the nearest GND or via to minimize loop inductance. It's important to use a solid continuous ground plane underneath to provide a low impedance return path especially for high frequency currents. 

    Additionally, please refer to the following hardware design checklist: swrr161.zip

    Regards,

    Aydin