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FDC1004 Proximity application

Patrick Chen
Mastermind 8875 points
Other Parts Discussed in Thread: FDC1004, FDC1004EVM

Hello,

               Can I ask one question ?  if customer would liek to use FPC board that mounted on the metal mechanical for proximity application outside. Please refer to figure. Has any problem for FDC1004 sensing while object is above metal mechanical? Do we have any suggest design to implement this topology for reference? Thank you.

BR

Patrick

  • 0
    TI__Expert 7400 points
    Hi Patrick:

    It is not possible if the metal mechanical piece is grounded. It is possible to use it as the actual sensor rather than having an FPC, just depends on what it looks like or what it is being used as. Typically, we do not suggest the topology above, but it could be prototyped easily.

    Use an FDC1004EVM and connect your own sensor to the metal mechanical fixture, and then try and sense it.

    Thanks
    -David Wang
    Capacitive Sensing Applications