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MSP432E401Y: DGND/AGND separation

Genius 10655 points

Replies: 2

Views: 70

Part Number: MSP432E401Y

Hello,

 
Our customer has an question for AGND and DGND separation.

 
From the pin layout of this device, ADC part and other digital part looks clearly separated inside the device.
So my customer is considering to separate AGND area and DGND area like the below.



Is this way effective in this device?
If it is effective, could you give me some advice where they should put the boundary between AGND and DGND under the device?

Regards,
Oba 

 

  • Hello Oba,

    I can't comment on the internal layout of the device, but it is good to separate analog from digital circuitry on your board layout. In the diagram above, let me point out that the AGND section covers several digital power pins including VDD (7, 16, 122) and GND (17) pins.

    Regards,

    James

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    NOTE: Replies will be delayed due to US holiday.

  • Oba:

    These links might help you.

    1. PCB Design Guidelines For Reduced EMI (SZZA009)
    2. PCB Design Guidelines for 0.5mm Package-on-Package Applications Processor, Part I (SPRABB3)
    3. CC13xx/CC26xx Hardware Configuration and PCB Design Considerations (SWRA640)
    4. Search for PCB Design Considerations.

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