General Description
The MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from
4.5V to 76V making them ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4080 is designed for unidirectional current-sense applications and the MAX4081 allows bidirectional current sensing.

FEATUREs
♦Wide 4.5V to 76V Input Common-Mode Range
♦Bidirectional or Unidirectional ISENSE
♦Low-Cost, Compact, Current-Sense Solution
♦Three Gain Versions Available
  5V/V (MAX4080F/MAX4081F)
  20V/V (MAX4080T/MAX4081T)
  60V/V (MAX4080S/MAX4081S)
♦±0.1% Full-Scale Accuracy
♦Low 100µV Input Offset Voltage
♦Independent Operating Supply Voltage
♦75µA Supply Current (MAX4080)
♦Reference Input for Bidirectional OUT (MAX4081)
♦Available in a Space-Saving, 8-Pin µMAX Package

APPLICATIONs
Automotive (12V, 24V, or 42V Batteries)
48V Telecom and Backplane Current Measurement
Bidirectional Motor Control
Power-Management Systems
Avalanche Photodiode and PIN-Diode Current Monitoring
General System/Board-Level Current Sensing
Precision High-Voltage Current Sources