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WEBENCH® Tools/LDC1612-Q1: LDC1612-Q1: Is it able to direct the electromagnetic field of the coil in one specific direction?

Stella Steffens
Prodigy 20 points
Part Number: LDC1612-Q1
Other Parts Discussed in Thread: LDC1612

Tool/software: WEBENCH® Design Tools

Hi,

I have a question regarding the electromagnetic field, created by the configurated coil. Does a ready-made solution from TI exist to direct the field in one specific direction, for example with a ferrite core. We plan to use the sensor in a system, which  allows various degrees of freedom and we would like to avoid that other moving components have an impact on the measured distance.

Best regards

Stella

  • 0
    TI__Genius 17440 points
    Hi Stella,

    We do not have a ready-made solution for this, but we do have recommendations. Are you using a PCB coil or a wire-wound coil? If you are using a PCB coil, you could try adding a ferrite sheet to the back of the sensor to shield it from conductive objects behind it. For moving components in front of the coil, there are a few guidelines for both wire-wound and PCB coils. The LDC1612 can detect objects up to 200% of the coil's diameter, so if the other objects are further away than this, they won't significantly affect the measurements. You should ensure that your target is the closest to conductive object to the sensor. The other moving components should also be made out of materials that are much less conductive than the intended target. For example, the target could be aluminum and the other moving components could be stainless steel.

    Regards,
  • 0 in reply to Kristin Jones93
    Prodigy 20 points
    Thank you very much for the useful informations!

    Regards,

    Stella Steffens