The INA169NA from Texas Instruments is a high-side current shunt monitor that allows for simple and efficient current monitoring in a variety of applications. This precision analog device is designed to measure current from 0 to over 5A with a common-mode voltage range from 2.7V to 60V, making it suitable for both low and high voltage systems.

Key Features

• High-Side Measurement: The INA169NA measures the drop across a shunt resistor on the high side of the load, providing isolation from the ground and reducing the risk of ground loops that can affect measurement accuracy.
• Wide Common-Mode Range: With a common-mode voltage range of 2.7V to 60V, it is versatile for use in systems with varying power supply voltages.
• Low Quiescent Current: The device features a low quiescent current of only 60µA, which minimizes the power consumption and makes it ideal for power-sensitive applications.
• Simple Analog Output: The output from the INA169NA is a simple analog voltage that is proportional to the current passing through the shunt resistor, allowing for easy interfacing with analog-to-digital converters (ADCs) or direct connection to microcontrollers.
• Wide Temperature Range: The device operates over an industrial temperature range from -40°C to +85°C, ensuring reliable performance in harsh environments.

Applications

The INA169NA is commonly used in applications such as:

• Battery chargers
• Power management systems
• Portable instruments
• Automotive systems
• Overcurrent protection circuits

Package and Availability

The INA169NA comes in a small 8-pin SOIC package, which is easy to integrate into existing designs and saves board space. It is widely available through Texas Instruments and authorized distributors, making it an accessible solution for current monitoring needs.

With its precision measurement capabilities and robust design, the INA169NA is an excellent choice for designers looking to add reliable current monitoring to their projects.