Product Overview: INA199A2RSWR by Texas Instruments

The INA199A2RSWR is a precision current-sensing amplifier from Texas Instruments, designed to monitor both shunt voltage drops and bus voltages with high accuracy. This device is part of the INA199 series, which is renowned for its versatility and reliability in various applications, including motor control, battery management, and power-supply monitoring.

Key Features

• Voltage Supply: The INA199A2RSWR operates at a supply voltage range of 2.7V to 26V, making it suitable for both low and high-voltage applications.
• Current Sensing: It has a voltage output that directly correlates with the current passing through the shunt resistor, providing an easy method to measure current flow with minimal external components.
• Gain Options: This particular model, the A2 variant, offers a fixed gain of 50V/V, which is ideal for applications that require moderate amplification of the shunt voltage.
• Accuracy: The INA199A2RSWR boasts a low offset voltage (±80 µV max) and high accuracy, ensuring precise current measurements across its operating temperature range.
• Quiescent Current: It features a low quiescent current, thus minimizing the power consumed by the amplifier itself and enhancing the overall efficiency of the system it is used in.
• Common-Mode Range: The device has an extended common-mode voltage range from –0.3V to 26V, which is maintained independent of the supply voltage, allowing for versatile use in systems with varying ground potentials.
• Packaging: It is offered in a compact SOT-23 package, which is ideal for space-constrained applications.

Applications

The INA199A2RSWR is well-suited for a wide range of applications, including:

• Power management in portable devices
• Overcurrent protection
• Battery chargers
• Automotive and industrial systems
• Energy management systems

With its combination of precision, low power consumption, and robustness, the INA199A2RSWR from Texas Instruments is an excellent choice for designers looking to implement accurate current sensing in their electronic designs.