There is, however, a trade-off here between choosing a smaller current-sense resistor at the expense of increasing the gain and a higher value current-sense resistor at the expense of using a larger higher power current-sense resistor (RSENSE) that minimizes the effect of i...
A current-sense amplifier (CSA) can be designed using a variety of topologies, two of which are shown in Figures 1 and 2. In Figure 1, an operational amplifier (op amp) is configured as a differential amplifier used to amplify the differential voltage developed across a c...