Texas Instruments INA186
The INA186 is a low-power, voltage-output, currentsense amplifier (also called a current-shunt monitor). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA186 can sense drops across shunts at commonmode voltages from –0.2 V to +40 V, independent of the supply voltage.| Part No. | INA186 |
|---|---|
| Datasheet | INA186 Download |
| Manufacturer |  Texas Instruments |
| Description | Current-Sense Amplifier |
| Buy | Stock & Price |
FEATURES
● Wide common-mode voltage range, VCM: –0.2 V to +40 V● Low input bias currents, IIB: 500 pA (typical) (enables microamp current measurement)
● Low power: – Low supply voltage, VS: 1.7 V to 5.5 V – Low quiescent current, IQ: 48 µA (typical)
● Accuracy: – Common-mode rejection ratio: 120 dB (minimum) – Gain error, EG: ±1% (maximum) – Gain drift: 10 ppm/°C (maximum) – Offset voltage, VOS: ±50 μV (maximum) – Offset drift: 0.5 μV/°C (maximum)
● Bidirectional current sensing capability
● Gain options: – INA186A1: 25 V/V – INA186A2: 50 V/V – INA186A3: 100 V/V – INA186A4: 200 V/V – INA186A5: 500 V/V 2
APPLICATIONS
● Standard notebook PC● Smartphone
● Consumer battery charger
● Baseband unit (BBU)
● Merchant network and server PSU
● Battery test 3
DESCRIPTION
The low input bias current of the INA186 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement.
