JAJSJK9B December 2021 – May 2024 TMAG5328
PRODUCTION DATA
One way to set up the BOP is to connect a resistor to the "ADJ" pin. The device generates a fixed current that is injected in the external resistor, and this generates a voltage that represents the BOP value. The relationship between BOP and resistance is defined as BOP(mT) = RADJ(kΩ). Note that the generated current on the "ADJ" pin is only present when the device is in active mode and turns OFF when the device is in sleep mode. As a result, the voltage on the "ADJ" pin is only present when the device is in active mode, which is a small duration compared to the time the device is in sleep mode.
The device BOP must be set to any value between 2mT and 15mT. This means RADJ must be set between 2kΩ and 15kΩ. Operating above and beyond those limits is not recommended and can result in either getting the wrong threshold set or locking up the device into a specific state without the possibility of exiting.
Figure 6-5 shows the relationship between BOP and RADJ.