INA181A2IDBVT

The INA181A2IDBVT 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 INA181A2IDBVT comes in a small, compact SOT-23 package, which is ideal for space-constrained applications. The SOT-23 package typically has a footprint of approximately 2.9 mm x 2.8 mm.
• Pin Count: It has 5 pins, which include the input, output, and power supply connections.

Electrical Characteristics:

• Supply Voltage: The device operates over a wide supply voltage range, typically from 2.7V to 5.5V, making it suitable for both low-voltage and standard voltage applications.
• Input Common-Mode Voltage Range: The INA181A2IDBVT features a high input common-mode voltage range, allowing it to accurately sense current in high-side configurations.
• Gain: The amplifier has a fixed gain of 100 V/V, which means it amplifies the voltage across the shunt resistor by a factor of 100, providing a significant output signal for further processing.
• Input Offset Voltage: It boasts a low input offset voltage, typically around 50 µV, which enhances its accuracy in current sensing applications.
• Bandwidth: The device has a bandwidth of approximately 1 MHz, allowing it to respond quickly to changes in current.

Performance Features:

• Low Noise: The INA181A2IDBVT is designed to minimize noise, which is crucial for accurate current measurements, especially in sensitive applications.
• High Linearity: The amplifier maintains high linearity across its operating range, ensuring that the output is a precise representation of the input current.
• Temperature Stability: The device is designed to operate reliably over a wide temperature range, typically from -40°C to +125°C, making it suitable for automotive and industrial applications.

Applications:

• Power Management: Ideal for monitoring current in power supply circuits, enabling efficient power management and protection.
• Battery Monitoring: Used in battery management systems to monitor charge and discharge currents, ensuring optimal battery performance and longevity.
• Motor Control: Suitable for current sensing in motor control applications, allowing for precise control of motor performance.

Conclusion:

The INA181A2IDBVT from Texas Instruments is a highly versatile and accurate current sense amplifier that combines a compact design with robust performance characteristics. Its features make it an excellent choice for a wide range of applications requiring precise current measurement and monitoring.