Product Overview: INA239AQDGSRQ1 - Texas Instruments

The INA239AQDGSRQ1 is a state-of-the-art, high-precision current sense amplifier designed by Texas Instruments specifically for automotive and industrial applications. This device is part of TI's extensive portfolio of current shunt monitors, offering high accuracy and performance in current measurement for system control and protection.

Boasting a wide common-mode voltage range from -0.2V to +85V, the INA239AQDGSRQ1 is capable of monitoring shunt resistor voltage drops across a broad spectrum of operating conditions. This feature makes it an excellent choice for applications that experience wide variations in supply voltages, such as automotive battery monitoring systems, motor control circuits, and power management systems.

The device offers a bidirectional sensing capability, which allows for precise measurement of both charging and discharging currents in battery management systems. This is crucial for maintaining the balance and health of the battery cells, as well as ensuring the efficiency and longevity of the battery system.

The INA239AQDGSRQ1 has an impressive accuracy specification, with an offset voltage of only ±10 µV and a gain error of only ±0.1%. These specifications ensure that the measurements are reliable and consistent, which is vital for systems that depend on accurate current sensing for their operation.

Integration is simplified thanks to its digital output interface which supports the I2C protocol, allowing for easy communication with microcontrollers and other digital systems. The device is also equipped with an ALERT pin, which can be configured to trigger an interrupt when a user-defined threshold is exceeded, adding an extra layer of safety and system response capability.

Housed in a small VSSOP-10 package, the INA239AQDGSRQ1 is designed to save space on the PCB while delivering robust performance. Its temperature range of -40°C to +125°C ensures that it can operate reliably in the harsh environments often found in automotive and industrial settings.

With its combination of precision, reliability, and digital integration, the INA239AQDGSRQ1 from Texas Instruments is an ideal solution for designers looking to enhance the safety, efficiency, and performance of their current sensing applications.