The INA180, INA2180, and INA4180 (INAx180) current sense amplifiers are designed for cost-optimized 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 V to +26 V, 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 minimizes gain error and reduces the temperature drift.
All these devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA180 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2180 draws a maximum supply current of 500 µA, and the quad channel draws a maximum supply current of 900 µA.
The INA180 is available in a 5-pin, SOT-23 package with two different pin configurations. The INA2180 is available in 8-pin, VSSOP and WSON packages. 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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | INAx180 Low- and High-Side Voltage Output, Current-Sense Amplifiers datasheet (Rev. H) | PDF | HTML | Jul 19, 2022 |
| Application note | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | Apr 27, 2026 | |
| Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | Nov 18, 2024 | |
| E-book | An Engineer's Guide to Current Sensing (Rev. B) | Apr 12, 2022 | ||
| Application brief | Common Uses for Multichannel Current Monitoring (Rev. A) | PDF | HTML | Sep 27, 2021 | |
| Selection guide | Current Sense Amplifiers (Rev. E) | Sep 20, 2021 | ||
| Technical article | Why current and magnetic sensing matters for wireless earbud design | PDF | HTML | Nov 11, 2019 | |
| Application note | Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using Zout | Oct 27, 2017 | ||
| Application brief | Low-Side Current Sense Circuit Integration | Mar 30, 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
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