ZHCSC46C February 2014 – June 2021 INA300
Figure 8-5 shows how the window comparator function is setup using two INA300 devices. The input terminals of each INA300 device are connected to the same current-sensing resistor. The limit threshold for the top device is set to the upper limit of the window range. The bottom device limit threshold is set to the desired lower limit of the range. With a logic inverter placed at the output of the device monitoring the lower limit, the OCP– signal is high when the input signal is above the lower limit threshold. The OCP+ signal is high when the input signal is below the upper limit threshold. A high value at the output (output of the AND gate) indicates that the monitored current is operating within the desired window range.
|INPUT CONDITION||OUTPUT STATUS|