The INA181 is a family of cost-optimized, bidirectional, current-sense amplifiers (also
called current-shunt monitors) that sense voltage drops across current-sense resistors at
common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA181 integrates
a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200
V/V. This matched gain resistor network minimizes gain error and reduces the temperature
The INA181 operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 260
µA of supply current.
All device options are specified over the extended operating temperature range of –40°C
to +125°C, and are available in a 6-pin, SOT-23 package.
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