INA170EA/250

The INA170EA/250 is a precision current sense amplifier manufactured by Texas Instruments. It is designed to provide accurate current measurements in a variety of applications, including battery management systems, motor control, and power monitoring.

Key Features:

1. Current Sensing: The INA170EA/250 is optimized for low-side current sensing, allowing it to measure the voltage drop across a shunt resistor placed between the load and ground. This configuration is particularly useful for applications where the load is connected to a common ground.

2. Gain Configuration: The amplifier has a fixed gain of 100 V/V, which means it amplifies the voltage across the shunt resistor by a factor of 100. This high gain allows for precise measurements of small voltage drops, which is essential for accurate current sensing.

3. Input Voltage Range: The device can operate with a wide input common-mode voltage range, making it suitable for various applications. It can handle input voltages from -0.2V to 26V, which provides flexibility in different circuit designs.

4. Supply Voltage: The INA170EA/250 operates with a single supply voltage ranging from 2.7V to 36V, making it compatible with a variety of power supply configurations.

5. Low Offset Voltage: The amplifier features a low input offset voltage, which minimizes measurement errors and enhances accuracy. This is crucial for applications requiring high precision.

6. Low Noise: The device is designed to have low noise characteristics, ensuring that the current measurements are not significantly affected by electrical noise in the system.

7. Package Type: The INA170EA/250 is available in a small, surface-mount package (SOT-23), which is ideal for space-constrained applications. The compact size allows for easy integration into various circuit designs.

8. Temperature Range: The device is rated for operation over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

Applications:

• Battery Management Systems: Used to monitor battery charge and discharge currents, ensuring efficient operation and safety.
• Motor Control: Helps in measuring the current drawn by motors, allowing for effective control and protection mechanisms.
• Power Monitoring: Enables accurate measurement of power consumption in various electronic devices, contributing to energy efficiency.

Conclusion:

The INA170EA/250 from Texas Instruments is a versatile and reliable current sense amplifier that provides high accuracy and precision in current measurement applications. Its combination of features, including a fixed gain, wide input voltage range, and low noise, makes it an excellent choice for engineers looking to implement effective current sensing solutions in their designs.