Quad channel output current sense amplifier
The INA180, INA2180, and INA4180 (INAx180) current sense amplifiers from Texas Instruments are designed for cost-optimised applications. These devices are part of a family of current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from -0.2 to +26V, independent of the supply voltage.
The INAx180 integrate 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 minimises gain error and reduces the temperature drift.
All these devices operate from a single 2.7 to 5.5V power supply. The single-channel INA180 draws a maximum supply current of 260µA; whereas, the dual-channel INA2180 draws a maximum supply current of 500µA, and the quad channel draws a maximum supply current of 900µA.
The INA180 is available in a five-pin, SOT-23 package with two different pin configurations. The INA2180 is available in an eight-pin, VSSOP package. The INA4180 is available in a 14-pin, TSSOP package. All device options are specified over the extended operating temperature range of -40°C to +125°C.
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