Description
The INAx191 is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier) that is commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits.
0.2 V to +40 V, independent of the supply voltage.
Features
- Low power:.
- Supply voltage, VS: 1.7 V to 5.5 V.
- Shutdown current: 100 nA (max INA191).
- Quiescent current: 43 μA at 25 °C (INA191).
- Low input bias currents: 100 pA (typical) (enables microamp current measurement).
- Bidirectional current measurement (INA2191).
- Accuracy:.
- ±0.25% max gain error (A2 to A5 devices).
- 7-ppm/°C gain drift (maximum).
- ±12 μV (maximum) offset voltage.
- 0.13-μV/°C offset drift (.
INA191-etcTI.pdf