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AWR1843AOP: Thermal pad position

Akira555
Intellectual 355 points
Part Number: AWR1843AOP
Other Parts Discussed in Thread: AWR6843AOP,

Hallo Expert ,

My customer got  AWR1843AOP,

They found the position of the thermal pad is different between the sample and the datasheet as attached.

Is there a mistake in the data sheet?

https://www.ti.com/jp/lit/ds/symlink/awr1843aop.pdf

https://www.ti.com/lit/ds/symlink/awr1843aop.pdf

Best Regards

  • +1
    TI__Mastermind 30025 points

    Hello,

    The datasheet is showing a top down view whereas your photo is showing a bottom up view, so the position is mirrored. The datasheet is showing the correct position.

    Regards,

    Adrian

  • 0 in reply to aozer
    Intellectual 355 points

    Adrian,

    Thank you for reply,

    Please confirm page 88 on date sheet ,I think this is top view.

    But  you mentioned below(pad pattern view) is top view,

    But pin order is different between each others.

    Could you tell me which is correct?

  • 0 in reply to Akira555
    Intellectual 355 points

    Adrian, 

    I would like to know the correct thermal pad location, dimensions.

    In addition, I found same issue on AWR6843AOP.

    Could you also share your views on AWR6843AOP?

    Best Regards

  • 0 in reply to Akira555
    TI__Mastermind 30025 points

    Hello,

    I looked a little closer and it does appear that the datasheet diagram is a bottom up diagram, which means that the thermal pad position in the datasheet is not matching the device. I need to check how to get this fixed.

    In the meantime, I would recommend for the customer to follow the same copper pour and solder paste implementation as the AWR1843AoPEVM:

    https://www.ti.com/tool/AWR1843AOPEVM#design-files

    Regards,

    Adrian

  • 0 in reply to aozer
    Intellectual 355 points

    Adrian,

     It seems that the design file for the AWR1843AOP evaluation board was also created with reference to the datasheet.
    The positions of the resist and mask for the thermal pad are misaligned on the left and right.
    Customer  made PCB referred to the design file.

    On the other hand,, the AWR6843AOP evaluation board design has no left-right shift (center position).
    If people create data as it is, it will be a little off from the  pad.


    I request you to correct the datasheet and submit the errata as soon as possible.

    Regards,

  • +1 in reply to Akira555
    TI__Guru* 91206 points

    Akira - 

    Thanks for the suggestions, we will take those into consideration on next updates made to the documents.