Official 7Semi INA219 Voltage, Current, Power Monitor Sensor Breakout I2C

The INA219 Voltage, Current, and Power Monitor Sensor Module is a precision measurement solution designed for high-side current sensing and accurate power monitoring in modern electronic systems. Capable of measuring bus voltages from 0V to 26V, this module allows engineers and developers to monitor voltage, current, and power consumption without disrupting the load, making it ideal for embedded and battery-powered applications.

Built around the Texas Instruments INA219, this breakout board offers high measurement accuracy combined with I2C and SMBus compatibility, enabling easy communication with microcontrollers and single-board computers such as Arduino, Raspberry Pi, ESP32, STM32, and other I2C-enabled platforms. The onboard precision shunt resistor enables low-loss current sensing, ensuring minimal impact on system efficiency.

One of the standout features of the INA219 module is its internal calibration and power calculation capability. The device includes internal multiplying registers that automatically compute current in amperes and power in watts, eliminating the need for complex calculations in firmware and simplifying real-time energy monitoring. Programmable conversion times, gain settings, and digital filtering options allow users to fine-tune performance for fast response or ultra-stable readings, depending on application requirements.

To support scalable system designs, the module provides 16 programmable I2C addresses, making it possible to connect multiple INA219 sensors on the same bus for multi-channel power monitoring. Despite its powerful feature set, the module maintains low power consumption, drawing only about 1 mA in standby mode, which is critical for portable and energy-sensitive designs.

The INA219 Sensor Module is widely used in robotics, power supply diagnostics, solar energy systems, battery management, current monitoring, and energy metering applications. Its compact size, ease of integration, and reliable performance make it an excellent choice for both prototyping and production environments.

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Features

• Wide Voltage Sensing Range: Monitors bus voltages from 0V to 26V for both low and high-voltage applications.

• Integrated Power Monitoring: Reports voltage drop, current draw, and power consumption in real time.

• I2C/SMBus Interface: Seamless integration with microcontrollers via I2C or SMBus communication.

• High Accuracy Measurements: Voltage (±0.4%), current (±1%), and power readings for precise system diagnostics.

• 16 Programmable Addresses: Enables monitoring of multiple modules on the same bus.

• Programmable Calibration Registers: Compensates for component tolerances to ensure accuracy.

• Low Quiescent Current: Operates efficiently with only 1mA standby current, perfect for low-power designs.

• Alert Pin Functionality: Triggers system interrupts based on configurable thresholds.

• Built-in Gain Amplifier: Supports eight programmable gain levels for sensitivity across a wide range of currents.

• Filtering Options: Adjustable filtering improves stability in noisy environments.

Package Includes

• 1x Official 7Semi INA219 Voltage, Current, Power Monitor Sensor