APPLICATION NOTE 3906

Creating a Bidirectional Current-Sense Amplifier from Two Unidirectional Current-Sense Amplifiers


Abstract: In many battery-current monitoring applications, bidirectional current sensing is required to measure both charge and discharge currents in the battery. This application note describes how to connect two unidirectional current-output, current-sense amps, such as the MAX4172 and MAX4173, to form one bidirectional current-sense amplifier.