INA169NA/3KG4

The INA169NA/3KG4 is a precision current shunt monitor from Texas Instruments, designed for high-performance applications requiring accurate current measurement. This device is particularly useful in power management systems, battery monitoring, and motor control applications.

Key Features:

1. Current Sensing: The INA169 is capable of measuring small voltage drops across a shunt resistor, allowing for precise current measurements. It can handle common-mode voltages up to 36V, making it suitable for a wide range of applications.

2. Gain Configuration: The device has a fixed gain of 100V/V, which amplifies the small voltage drop across the shunt resistor, enabling the output to be easily read by an analog-to-digital converter (ADC) or a microcontroller.

3. Output Voltage Range: The output voltage of the INA169 is designed to be compatible with standard logic levels, making it easy to interface with various digital systems.

4. Low Offset Voltage: The INA169 features a low input offset voltage, which enhances its accuracy in current sensing applications. This is crucial for applications where precision is paramount.

5. Wide Supply Voltage Range: The device operates over a wide supply voltage range, typically from 2.7V to 5.5V, allowing it to be used in battery-powered devices as well as in systems powered by higher voltages.

6. Temperature Range: The INA169 is rated for operation over a wide temperature range, making it suitable for industrial applications where environmental conditions can vary significantly.

7. Package Type: The INA169NA/3KG4 is available in a small, surface-mount package, which is ideal for space-constrained applications. The compact design helps in reducing the overall footprint of the circuit.

8. Applications: Common applications include battery management systems, power supply monitoring, motor control, and any system requiring accurate current measurement.

Electrical Characteristics:

• Input Voltage Range: The device can handle input voltages from -0.3V to +36V.
• Supply Current: The typical supply current is low, which helps in conserving power in battery-operated devices.
• Bandwidth: The INA169 has a sufficient bandwidth to accurately track fast-changing current signals, making it suitable for dynamic applications.

Conclusion:

The INA169NA/3KG4 from Texas Instruments is a robust and versatile current shunt monitor that provides high accuracy and reliability in current sensing applications. Its combination of features, including a fixed gain, wide supply voltage range, and low offset voltage, makes it an excellent choice for engineers looking to implement precise current measurement in their designs.