MAX4081SASA+ High-Side Current-Sense Voltage Output Bidirectional

The MAX4080/MAX4081 are high-side, current-sense amplifiers with aninput voltage range that extends from 4.5V to 76V making them ideal fortelecom, automotive, backplane, and other systems where high-voltagecurrent monitoring is critical.
The MAX4080 is designed forunidirectional current-sense applications and the MAX4081 allowsbidirectional current sensing.
The MAX4081 single output pincontinuously monitors the transition from charge to discharge andavoids the need for a separate polarity output.
The MAX4081 requires anexternal reference to set the zero-current output level (V_SENSE= 0V). The charging current is represented by an output voltage from V_REFto V_CC, while discharge current is given from V_REFto GND.
For maximum versatility, the 76V input voltage range appliesindependently to both supply voltage (V_CC) and common-modeinput voltage (V_RS+).
High-side current monitoring does not interfere with the ground path ofthe load being measured, making the MAX4080/MAX4081 particularly usefulin a wide range of high-voltage systems.
The combination of three gain versions (5V/V, 20V/V, 60V/V = F, T, Ssuffix) and a user-selectable, external sense resistor sets thefull-scale current reading and its proportional output voltage.
TheMAX4080/MAX4081 offer a high level of integration, resulting in asimple, accurate, and compact current-sense solution.
The MAX4080/MAX4081 operate from a 4.5V to 76V single supply and drawonly 75µA of supply current.
These devices are specified over theautomotive operating temperature range (-40°C to +125°C) and areavailable in a space-saving 8-pin µMAX® or SO package.