INA240A3PW

The INA240A3PW is a precision current sense amplifier manufactured by Texas Instruments. It is designed to provide accurate current sensing in a variety of applications, including power management, battery monitoring, and motor control. Here’s a detailed description of its features and specifications:

Package and Physical Characteristics:

• Package Type: The INA240A3PW comes in a TSSOP (Thin Shrink Small Outline Package) with 8 pins, which allows for a compact design suitable for space-constrained applications.
• Dimensions: The TSSOP package typically measures approximately 4.4 mm x 3.0 mm, with a height of about 1 mm, making it suitable for surface-mount technology (SMT) applications.

Electrical Characteristics:

• Supply Voltage: The device operates over a wide supply voltage range, typically from 2.7V to 5.5V, allowing it to be used in various systems.
• Input Common-Mode Voltage Range: The INA240A3PW features a high common-mode voltage range, which can extend up to 80V, making it suitable for high-side current sensing applications.
• Gain: The amplifier has a fixed gain of 100V/V, which allows for easy integration into systems without the need for external components to set the gain.
• Input Offset Voltage: It boasts a low input offset voltage, typically around 50µV, ensuring high accuracy in current measurements.
• Bandwidth: The device has a bandwidth of approximately 1 MHz, which allows it to respond quickly to changes in current.

Performance Features:

• Low Noise: The INA240A3PW is designed to minimize noise, which is critical for accurate current sensing, especially in low-current applications.
• High Linearity: The amplifier provides high linearity, ensuring that the output is proportional to the input current over a wide range of conditions.
• Temperature Stability: The device is designed to maintain performance across a wide temperature range, making it suitable for various environmental conditions.

Applications:

• Power Management: Ideal for monitoring current in power supply circuits, enabling efficient energy management.
• Battery Monitoring: Useful in battery management systems for accurate state-of-charge calculations.
• Motor Control: Can be employed in motor drive applications to monitor and control current, enhancing performance and safety.

Additional Features:

• Integrated Protection: The INA240A3PW includes features that protect against overvoltage and overcurrent conditions, enhancing reliability in demanding applications.
• Ease of Use: The device is designed for straightforward integration into existing designs, with minimal external components required.

In summary, the INA240A3PW from Texas Instruments is a versatile and high-performance current sense amplifier that is well-suited for a variety of applications requiring precise current measurement and monitoring. Its combination of high common-mode voltage range, low offset voltage, and compact packaging makes it an excellent choice for engineers looking to implement accurate current sensing in their designs.