DRV5023: Differences

Hello Janine,

Thank you for using the TI forum, here are my responses to your questions:

1)  The DRV5023 is a Hall effect switch, and the difference between the AJ and BI versions of the DRV5023 are the magnetic thresholds that the switch becomes active. See the Magnetic Characteristics page of the datasheet for more details:

2) The difference between the DRV5023 and the DRV5013 is that the DRV5023 is a switch meaning that it is active only while the magnetic field is present.  The DRV5013 is a latch which means that one magnetic field drives the output low, and it will stay low until it sees the other magnetic field which will put the output high:

Switch:

Latch:

3/4) The distance and spacing requirements significantly depend on the size and strength of the magnet, as well as the sensitivity of the chosen sensor. I recommend using the Hall Effect Switch Magnetic Field Calculator that can be found on the product page (imaged below) to help you find how far the magnet needs to be from the sensor.  You can use a general magnetic field calculator (such as this one: https://www.kjmagnetics.com/fieldcalculator.asp) to calculate the strength of the magnetic field off to the side of the magnet to find out how close you can put two switches together. I also highly recommend watching some of the training videos on Hall effect sensors (https://training.ti.com/ti-precision-labs-magnetic-sensors) to learn more about Hall position sensing.