Figure 6-10 shows the INAx290 –3-dB bandwidth is gain-dependent with gain options of 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The unique multistage design enables the amplifier to achieve high bandwidth at all gains. This high bandwidth provides the throughput and fast response required for rapid detection and processing of overcurrent events.

The device bandwidth also depends on the applied V_SENSE voltage. Figure 7-2 shows the bandwidth performance profile of the device over frequency as output voltage increases for each gain variation. As shown in Figure 7-2, the device exhibits the highest bandwidth with higher V_SENSE voltages, and the bandwidth is higher with lower device gain options. Individual requirements determine the acceptable limits of error for high-frequency, current-sensing applications. Testing and evaluation in the end application or circuit is required to determine the acceptance criteria and validate whether or not the performance levels meet the system specifications.

Figure 7-2 Bandwidth vs Output Voltage