The INA250A1PW is a precision current sense amplifier that integrates a current shunt and an operational amplifier (op-amp) in one compact package. Manufactured by Texas Instruments, a leader in semiconductor solutions, this device is designed to offer accurate current measurement for a wide range of applications.

Key Features

• Integrated Shunt Resistor: The INA250A1PW features a precision integrated shunt resistor of 2 mΩ, providing a high-accuracy current sensing solution.
• Wide Common-Mode Range: This amplifier operates over a common-mode voltage range from -0.2 V to +36 V, suitable for various systems including high-side or low-side current sensing.
• High Accuracy: With a gain error of only ±0.1%, the INA250A1PW ensures precise current measurement, which is crucial for system monitoring and control.
• Output Voltage: The device provides an output voltage that is proportional to the current passing through the shunt resistor, enabling easy interfacing with microcontrollers or analog-to-digital converters (ADCs).
• Quiescent Current: The low quiescent current of 65 µA minimizes power consumption, making it suitable for power-sensitive applications.

Applications

The INA250A1PW is ideal for a variety of applications that require precise current measurement, including:

• Power management systems
• Battery chargers and monitors
• Overcurrent protection
• Automotive systems
• Telecommunications equipment

Package and Reliability

The device comes in a 14-pin TSSOP (Thin Shrink Small Outline Package) that is designed for space-constrained applications. The INA250A1PW also features robust electrostatic discharge (ESD) protection and is specified for operation from -40°C to +125°C, ensuring reliable performance in harsh environments.

Summary

With its integrated shunt resistor, high accuracy, and wide common-mode range, the INA250A1PW from Texas Instruments is an excellent choice for designers looking for a reliable current sensing solution. Its low power consumption and robust package make it versatile for use across various industrial and automotive applications.