Introducing the INA250A3QPWRQ1 from Texas Instruments

The INA250A3QPWRQ1 is a precision automotive current shunt monitor from Texas Instruments (TI) that integrates a high-accuracy current sensing amplifier with an internal precision shunt resistor. This innovative device is designed to offer a complete current sensing solution for automotive and industrial applications, providing both high performance and ease of use.

Key Features

• Integrated Precision Shunt Resistor: The device features an integrated 2 mΩ precision shunt resistor, enabling high-accuracy current measurement without the need for an external shunt resistor, simplifying the design and reducing the system footprint.
• High Accuracy: With a gain error of only ±0.1% (max) and a temperature drift of just ±15 ppm/°C (max), the INA250A3QPWRQ1 ensures precise current measurement across a wide temperature range, making it ideal for demanding automotive environments.
• Wide Common-Mode Range: The device operates over a common-mode voltage range from 2.7V to 36V, catering to a variety of applications from low-voltage systems to higher voltage battery monitoring and motor control circuits.
• High Bandwidth: Offering a bandwidth of up to 400 kHz, the INA250A3QPWRQ1 is capable of tracking rapid current changes, suitable for dynamic load conditions and transient response analysis.
• Output Voltage Scaling: The output of the INA250A3QPWRQ1 scales with the current flowing through the integrated shunt resistor, providing an analog voltage output that is directly proportional to the current, which can be easily interfaced with ADCs or microcontrollers.

Applications

The INA250A3QPWRQ1 is designed for a variety of applications where accurate current measurement is critical. Its robust design and high precision make it particularly well-suited for:

• Automotive battery management systems
• Motor control in industrial and automotive systems
• Power management in automotive infotainment and telematics systems
• Overcurrent protection circuits

Quality and Reliability

As an automotive-qualified product, the INA250A3QPWRQ1 meets the stringent requirements of the automotive industry, including AEC-Q100 qualification. This ensures reliable performance under harsh conditions, making it a trustworthy choice for safety-critical automotive systems.

With its integrated features and high level of integration, the INA250A3QPWRQ1 from Texas Instruments represents a state-of-the-art solution for current sensing in both automotive and industrial applications.