INA181A2IDBVR

The INA181A2IDBVR is a precision current sense amplifier manufactured by Texas Instruments. It is designed for high-performance applications where accurate current measurement is essential. Below is a detailed description of its key features and specifications:

General Description:

The INA181A2IDBVR is a low-power, high-precision current sense amplifier that operates with a supply voltage range of 2.7V to 5.5V. It is particularly suited for applications in battery management systems, motor control, and power monitoring, where it can accurately measure small voltage drops across a shunt resistor.

Key Features:

• Input Common-Mode Voltage Range: The device can handle a wide common-mode voltage range, making it suitable for high-side current sensing applications. It can operate with input common-mode voltages up to 26V, which is beneficial for monitoring currents in high-voltage systems.

• Gain: The INA181A2IDBVR has a fixed gain of 100V/V, allowing it to amplify the small voltage drop across the shunt resistor to a level that can be easily read by an analog-to-digital converter (ADC) or microcontroller.

• Low Offset Voltage: The amplifier features a low input offset voltage, typically around 50µV, which ensures high accuracy in current measurements.

• Low Noise: The device is designed to minimize noise, providing a clean output signal that is crucial for precise measurements.

• Low Quiescent Current: With a quiescent current of only 100µA, the INA181A2IDBVR is energy-efficient, making it ideal for battery-powered applications.

• Temperature Range: The device operates over an extended temperature range of -40°C to +125°C, ensuring reliability in various environmental conditions.

Package Information:

The INA181A2IDBVR is available in a small, space-saving SOT-23 package, which is suitable for compact designs. The package dimensions are approximately 2.9mm x 2.8mm, making it easy to integrate into various circuit layouts.

Applications:

• Battery Management Systems: For monitoring charge and discharge currents in battery packs.
• Motor Control: To measure current in motor drive applications, ensuring efficient operation and protection.
• Power Monitoring: For accurate current sensing in power supplies and energy metering applications.

Conclusion:

The INA181A2IDBVR from Texas Instruments is a versatile and reliable current sense amplifier that combines precision, low power consumption, and a wide common-mode voltage range. Its features make it an excellent choice for a variety of applications requiring accurate current measurement.