INA226 Dual Function Voltage and Current Sensor

The INA226 is a precision dual-function voltage and current sensor from Texas Instruments. It is designed to accurately measure both the voltage and the current flowing through a shunt resistor. The device is commonly used in a variety of power management and monitoring applications.

The sensor also includes a built-in precision voltage reference and a 12-bit ADC for accurate measurements. The INA226 communicates with a host microcontroller via an I2C interface, making it easy to integrate into a wide range of systems. One of the key features of the INA226 is its low-drift voltage and current sensing. This allows the device to provide accurate measurements over a wide temperature range and ensures that the measurements are stable over time.

Specifications:

• Maximum Operating Voltage: 3.3V
• Maximum Measuring Voltage: 36V
• Max Measuring Current: 819mA
• Shunt Resistor: 0.1Ω

Connectivity:

The INA226 module communicates via the I2C protocol, allowing for more I2C-enabled devices to be added to your projects. It can be interfaced with either 3.3V or 5V compatible microcontrollers such as the ESP32, Teensy or Arduino microcontrollers. No logic level shifter is required.

Pinout Diagram:

Uses:

The INA226 can be used in power management applications to monitor the current, voltage, and power consumption of a load. It can be used to optimize power usage, detect overloads or short circuits, and provide feedback to a control system.

• Power Management projects.
• Robotics.

Please Note:

• Changing the shunt resistor value will increase the maximum current measuring capacity.

Documentation:

• Arduino IDE library.