Understanding of magnetic parameters in Hall sensors

Because there are many Hall sensors arranged on the board And the distance is relatively close , When choosing sensors at this time , Magnetic parameters are very important

This is OH49E Magnetic parameter characteristic diagram of , It can be seen that the working voltage is related to the north and south poles , And the Gaussian magnetic field with hundreds of magnitudes is in 1000gs Output under the intensity of magnetic field 4.0v DC relatively high level In the opposite direction 1000gs The magnetic field is 1.0v Relatively low level

This is OH9248 Parameters of , There is no distinction between the north and the South , And the Gaussian magnetic field range of the working point is only dozens of points . Close magnets do not need to distinguish between the north and south poles , near , The magnetic field strength meets ,55gs That's enough , Just work at the working point , This is highly sensitive
According to the specific situation of the project , Choosing the right sensor is very important , You can avoid many unnecessary debugging .