INA300AQDGSRQ1

The INA300AQDGSRQ1 is a precision current sense amplifier manufactured by Texas Instruments. It is designed to provide accurate current sensing in a variety of applications, including battery management systems, motor control, and power monitoring. Here’s a detailed description of its key features and specifications:

Key Features:

1. Current Sensing: The INA300AQDGSRQ1 is optimized for low-side current sensing, allowing it to measure the current flowing through a load by placing it between the load and ground.

2. High Common-Mode Voltage Range: This device can operate with a common-mode voltage range of -0.3V to 26V, making it suitable for a wide range of applications, including those with high supply voltages.

3. Low Input Offset Voltage: The amplifier features a low input offset voltage, typically around 50 µV, which enhances its accuracy in current measurement.

4. Gain Configuration: The INA300AQDGSRQ1 has a fixed gain of 100 V/V, which simplifies the design process as it does not require external resistors for gain setting.

5. Wide Bandwidth: The device offers a bandwidth of up to 1 MHz, allowing it to respond quickly to changes in current, which is essential for dynamic applications.

6. Low Power Consumption: With a quiescent current of only 100 µA, the INA300AQDGSRQ1 is energy-efficient, making it suitable for battery-powered applications.

7. Integrated Comparator: The device includes an integrated comparator with a programmable threshold, which can be used for overcurrent detection and protection.

8. Thermal Shutdown: It features thermal shutdown protection, ensuring reliable operation under varying temperature conditions.

9. Package Type: The INA300AQDGSRQ1 is available in a small, compact package (SOT-23), which is ideal for space-constrained applications.

Applications:

• Battery Management Systems: For monitoring charge and discharge currents in battery packs.
• Motor Control: To sense current in motor drive applications for feedback and protection.
• Power Monitoring: For measuring current in power supplies and energy metering systems.
• Overcurrent Protection: Utilizing the integrated comparator for real-time current monitoring and protection.

Electrical Characteristics:

• Supply Voltage: The device operates from a supply voltage range of 2.7V to 5.5V.
• Output Voltage Swing: The output can swing close to the ground, making it suitable for low-side sensing applications.
• Input Common-Mode Rejection Ratio (CMRR): High CMRR ensures that variations in common-mode voltage do not affect the accuracy of the current measurement.

Conclusion:

The INA300AQDGSRQ1 from Texas Instruments is a versatile and efficient current sense amplifier that combines precision, low power consumption, and a compact design, making it an excellent choice for a wide range of current sensing applications in modern electronic systems. Its integrated features and robust performance characteristics make it a reliable component for engineers looking to implement accurate current measurement solutions.