Texas Instruments

INA381A2IDGSR

The INA381A2IDGSR is a high-side current-sense amplifier from Texas Instruments. It is designed to accurately measure the current flowing through a load in a variety of applications, including battery monitoring, motor control, and power management.

Description:

The INA381A2IDGSR is a monolithic, precision current-sense amplifier that can operate from a single supply voltage as low as 2.7V. It features a high input impedance and a low output impedance, making it ideal for use in high-side current sensing applications. The device also includes an internal 1.25V reference, which can be used to set the gain of the amplifier.

Features:

• High accuracy: The INA381A2IDGSR offers excellent accuracy, with a maximum current accuracy of ±0.5% and a maximum offset drift of ±1μA/°C.
• Low input offset voltage: The device has a low input offset voltage of 100μV, which helps to minimize errors in current measurements.
• Programmable gain: The gain of the INA381A2IDGSR can be programmed using an external resistor, allowing for flexible current measurement ranges.
• Wide supply voltage range: The device can operate from a supply voltage as low as 2.7V, making it suitable for use in low-voltage applications.
• Small package: The INA381A2IDGSR is available in a compact 8-pin SOIC package, making it easy to integrate into a variety of applications.

Applications:

The INA381A2IDGSR is suitable for a wide range of applications where accurate current sensing is required. Some potential applications include:

• Battery monitoring: The INA381A2IDGSR can be used to measure the current flowing in and out of a battery, providing valuable information about the battery's state of charge and overall health.
• Motor control: In motor control applications, the INA381A2IDGSR can be used to measure the current flowing through the motor, allowing for precise control of motor speed and torque.
• Power management: The INA381A2IDGSR can be used in power management systems to monitor the current flowing through various power rails, helping to ensure that power is distributed efficiently and effectively.
• Energy harvesting: In energy harvesting applications, the INA381A2IDGSR can be used to measure the current generated by renewable energy sources, such as solar panels or wind turbines, allowing for efficient energy storage and use.

Overall, the INA381A2IDGSR is a versatile and accurate current-sense amplifier that is well-suited for a wide range of applications where precise current measurement is required. Its high accuracy, low input offset voltage, and programmable gain make it an excellent choice for a variety of applications, from battery monitoring to motor control and beyond.