Advantages and disadvantages of magnetic field sensors in general
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What are the advantages and disadvantages of magnetic position sensing versus other approaches such as optical position sensing?
11/21/2017 | 09:01 pm

jogammel
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The Si72xx series of parts are sensitive to magnetic field in the axis normal to the package. For the SOT-23 and DFN packages this is also the axis normal to the PCB. For the T092 package the axis is parallel to the PCB plane.
Some magnetic position sensors (e.g. reed switches or GMR effect sensors) are sensitive to other axes of field. In most cases, it is possible to order the magnet with a different polarization to produce magetnic field in the desired axis.
11/21/2017 | 09:01 pm

jogammel
Employee
The Si72xx series of parts are sensitive to magnetic field in the axis normal to the package. For the SOT-23 and DFN packages this is also the axis normal to the PCB. For the T092 package the axis is parallel to the PCB plane.
Some magnetic position sensors (e.g. reed switches or GMR effect sensors) are sensitive to other axes of field. In most cases, it is possible to order the magnet with a different polarization to produce magetnic field in the desired axis.
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