Device hysteresis is adjustable based on the setting at the hysteresis (HYS) terminal. The smallest setting for hysteresis on the device, 2 mV, is enabled by leaving the HYS terminal open and floating. A 4-mV hysteresis is set by connecting the HYS terminal to ground; connecting this terminal to the supply voltage sets the hysteresis to 8 mV, as shown in Figure 7-6. The HYS terminal must be either connected directly to ground, directly to supply, or left completely floating. Additional external resistors must not be connected to this terminal. If a resistance is required by the application to be placed in series with either the supply or ground connections to the HYS terminal, this resistance must be limited to 1 kΩ so as to not conflict with the internal level-detection circuitry.

Figure 7-6 Hysteresis

The wide dynamic input range of the INA300-Q1INA300-Q1 necessitates an adjustable hysteresis to ensure that the device can be appropriately configured based on the specific operating conditions and application requirements. Figure 7-7 illustrates the transition locations for the ALERT terminal based on where the input signal, V_IN, is measured relative the limit threshold, V_LIMIT. The corresponding hysteresis levels and physical terminal settings for the device are shown in Table 7-5.

Figure 7-7 Typical Comparator Hysteresis