INA199B3RSWR

The INA199 series of voltage-output, current shunt monitors (also known as current sense amplifiers) are commonly used for overcurrent protection, precise current measurement for system optimization, or closed-loop feedback circuits. These devices can sense the voltage drop across a shunt resistor at a common-mode voltage ranging from –0.3V to 26V, independent of the supply voltage. There are three fixed gains available: 50V/V, 100V/V, and 200V/V. The series uses a zero-drift architecture with low offset, enabling it to maintain a maximum voltage drop across the shunt resistor as low as 10mV full-scale during current sensing. These devices are powered by a single supply voltage from 2.7V to 26V and consume a maximum supply current of 100μA. All versions are rated for an operating temperature range of -40°C to 125°C and are available in two packages: SC70-6 and thin UQFN-10.

Applications

• Laptops
• Mobile phones with Qi-compliant wireless charging transmitters
• Telecommunications equipment
• Power management battery chargers

Key features

• Wide common-mode range: -0.3V to 26V
• Offset voltage: ±150μV (maximum) (supports 10mV full-scale shunt voltage drop)
• Accuracy:
• Gain error (maximum over-temperature): ±1% (C version), ±1.5% (A and B versions)
• Offset drift: 0.5μV/°C (maximum)
• Gain drift: 10ppm/°C (maximum)
• Gain selection:
• INA199x1: 50V/V
• INA199x2: 100V/V
• INA199x3: 200V/V
• Quiescent current: 100μA (maximum)
• Package: 6-pin SC70, 10-pin UQFN