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IWR6843ISK: Questions about VIA specifications

Tsutomu Watanabe
Prodigy 30 points
Part Number: IWR6843ISK

Hi Ti team ,

I have a question about the VIA specification in the board manufacturing data for the evaluation board (IWR6843ISK).
Is it correct to assume that the hole size ranges from 0mm to 0.15mm according to the following VIA specifications?
For example, is it possible to manufacture with a hole size of 0.1mm?

For the board manufacturing data, I referred to the following document.

SWRC355C.ZIP
www.tij.co.jp/.../swrc355

File storage location
\swrc355\xWR6843ISK_DesignFiles\Rev_D\Fabrication Drawing\PROC073D_FabNotes.PDF

The notation for the figure is on the second page of the PDF file.

Thank you for your kind attention to the above.
Tsutomu Watanabe.

  • 0
    Prodigy 30 points

    The final devices are planned to include

    A device that uses millimeter wave radar to detect the movement and presence of people.

    It will be used only indoors.
    It can be hung on a wall or placed on a shelf.
    It can be used in places where cameras cannot be used for privacy.

    However, we are not sure if it will be commercialized yet.

  • 0 in reply to Tsutomu Watanabe
    TI__Mastermind 30545 points

    Hello Tsutomu,

    The via sizes for the antenna section should not be changed if you are planning to copy our antenna design.

    The other vias can be any size you want. You would need to work directly with your board manufacturer to understand their capabilities and tolerances, we cannot answer that question for you. If you do change the via size, you will need to make sure you can still meet the current requirements for all of the high current paths on the PCB.

    Regards,

    Adrian

  • 0 in reply to aozer
    Prodigy 30 points

    Hi Ti Adrian ,

    Thank you very much for your reply.
    I understand that the via size of the antenna section should not be changed.

    Also, please tell me how to read the table of antenna section via size.
    The design value of the via size is 0.15mm and the tolerance is written as +0mm and -0.15mm.

    In that case, should the via size be in the range of 0 mm to 0.15 mm including the manufacturing finish tolerance?

    Thank you and regards,

    Tsutomu.

  • 0 in reply to Tsutomu Watanabe
    TI__Mastermind 30545 points

    Hello Tsutomu,

    You are right, the hole tolerance is strange. A 0mil drill would not make sense. Let me check internally and see why the tolerance is specified that way.

    Regards,

    Adrian

  • 0 in reply to aozer
    Prodigy 30 points

    Hi Adrian ,

    Thank you very much for your reply.
    Please reply again when you get new information.

    Regards,

    Tsutomu.