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Magnetic sensor

Phuc Hoang
Prodigy 20 points
Other Parts Discussed in Thread: DRV425, DRV5056, DRV5055, DRV5053

I am looking for sensors to detect the magnetic lines, as in the image.
TI has too many sensors and I have not found the right type.
With a sensitivity of 0.5 mT
The distance from the sensor to the line from 30 to 50mm

Help me find the right kind of sensor. Thank you

  • 0
    TI__Mastermind 26335 points
    Hello Phuc,

    Thanks for considering to use Texas instruments. We will get back to with a response for your query on the next business day, Monday 11/26, starting at 8 a.m. mountain standard time in the United States.
  • 0
    TI__Mastermind 26185 points
    Hello Phuc,

    If you are going to have a maximum sensitivity of 0.5 mT, then I recommend the DRV425 (a fluxgate sensor), which is a linear magnetic sensor with a full scale range of ±2mT.

    Based on your design requirements, you may be able use a linear Hall device instead. If you need a bidirectional sensor, then then you may consider using the DRV5055 (the A1 version, which has a full scale rage of ±21mT). If you only need a unidirectional sensor, then you may consider using the DRV5056 (the A1 version, which has a full scale range of 20mT). If your maximum sensitivity is 0.5mT, then you may be limited with the combined noise of the sensor and your system (which is why the DRV425 may be better for you).
  • 0 in reply to Mitch M
    Prodigy 20 points
    Thank You,

    I have ordered DRV5053VAQLPG code.

    It was great when you advised me on the IC code DRV5055

    If so, can you explain the difference between DRV5053 and DRV5055?

    I will test and share the joy with you
  • 0 in reply to Phuc Hoang
    TI__Mastermind 26185 points

    Hello Phuc,

    The table below highlights some of the main differences between the DRV5055 and the DRV5053. The biggest thing to note is that the DRV5055 is more accurate than the DRV5053, but the DRV5053 has a wider supply voltage range.  The two devices also have different sensitivity options available. There are many other differences as well (ie, power consumption, cost, etc.) which you can see in their respective datasheets and product pages.