While most Hall Effect switch sensors have fixed magnetic characteristics, the TMAG5328 offers a wide range of adjustable thresholds. The user can use the "ADJ" pin to set the value of B_OP threshold. This pin can be used in two different ways. A resistor or a voltage source can be applied on "ADJ". In both scenarios, the resistor or voltage value defines the position of the B_OP. While the B_OP can be adjusted, the hysteresis has a fixed value. B_RP is therefore defined as B_OP – Hysteresis.

The TMAG5328A1D (duty cycled version) has an 80µA current generated on pin "ADJ" when the part goes into active mode. The device then reads the "ADJ" pin and defines the value of B_OP. The TMAG5328 supports adjusting the B_OP dynamically. If the "ADJ" pin value is adjusted while the sensor is in sleep mode, the B_OP updates at the next active period of the device. Consequently, the maximum time the internal B_OP threshold can take to update for the TMAG5328A1D version is equal to the period of magnetic sampling, t_s (50ms).

The TMAG5328A1Z (continuous time version) has an 80µA current continuously generated on pin "ADJ" to dynamically adjust the B_OP threshold if desired. The maximum time the internal B_OP threshold can take to update for the TMAG5328A1Z version is 25µs.