INA199C3RSWR

The INA199C3RSWR from Texas Instruments is a versatile current-sense amplifier designed for applications requiring precise current monitoring and overcurrent protection. This device operates across a wide common-mode voltage range of -0.3 V to 26 V, independent of the supply voltage, making it suitable for both low-side and high-side sensing.

Key electrical specifications include a maximum accuracy of ±1% over temperature, an offset voltage of ±150 µV, and an offset drift of 0.5 µV/°C. The amplifier has a quiescent current of 100 µA maximum. It is available in fixed gains of 50 V/V, 100 V/V, and 200 V/V, with this specific 'C3' version offering a gain of 200 V/V.

Packaged in a compact 10-UQFN (1.8x1.4 mm) surface-mount package, the INA199C3RSWR operates within an industrial temperature range of -40°C to 125°C. Its design is well-suited for system optimization and closed-loop feedback circuits where accurate current measurement is critical.

This series of current-shunt monitors is commonly employed in battery management systems, power supply monitoring, and motor control applications. The device's ability to sense small voltage drops across shunt resistors enables high-precision current measurements even at low full-scale values.