If the current level indicating an out-of-range condition is present is 20 A, and the current-sense resistor value is 10 mΩ, then the input threshold signal is 200 mV. The INA301A1-Q1 has a gain of 20, therefore, the resulting output voltage at the 20-A input condition is 4 V. The value for R_LIMIT is selected to allow the device to detect to this 20-A threshold, indicating an overcurrent event occurred. When the INA301-Q1 detects this out-of-range condition, the ALERT pin asserts and pulls low. For this example, Table 7-2 lists the calculated value of R_LIMIT required to detect a 4-V level as 50 kΩ.