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CheB8
CheB8
Associate
February 2, 2021
Solved

Using L9177A with hall effect sensor

  • February 2, 2021
  • 2 replies
  • 950 views

Not sure this is the right section...but I would like to know if it is possible to use the L9177A with an hall effect sensor, in that case, I guess the signal is to be routed to the VRIN+ input, what about the VRIN- input?

Must be connected to GND or to a some threshold voltage? whats the level of the signal the L9177A will recognize with hall sensor signal?

Thanks a lot.

    This topic has been closed for replies.
    Best answer by Erwan YVIN

    Hello ,

    Sorry , i am not the expert of this IC.

    According to the RM , there is a VRS interface (cf screenshot)

    Maybe , you can use it.

    0693W000007DjV8QAK.png 

    best regards

    Erwan

    2 replies

    Erwan YVIN
    Erwan YVINBest answer
    ST Technical Moderator
    February 3, 2021

    Hello ,

    Sorry , i am not the expert of this IC.

    According to the RM , there is a VRS interface (cf screenshot)

    Maybe , you can use it.

    0693W000007DjV8QAK.png 

    best regards

    Erwan

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    CheB8
    CheB8Author
    Associate
    February 3, 2021

    Hello Erwan,

    thank you for your reply, I have read the datasheet before to write, as in the datasheet it is stated the VRS circuitry could work with hall effect sensor, I tested connecting the hall signal (0 to 3.3V square wave) to the VRIN+ and connecting the VRIN- signal to GND without succcess, this is why I asked for help.

    Thanks,

    Best regards.

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