INA219 I2C Bi-directional DC Current and Power Sensor Module 3‑5V

The INA219 DC Current and Power Monitor Module is a high‑precision, bi‑directional current sensing board with an I2C digital interface. Built around Texas Instruments’ INA219 chip, this module allows accurate monitoring of shunt voltage, bus voltage, current, and power in real time.

Perfect for applications such as servers, laptops, battery management, IoT devices, and power supply systems, it supports both low and high voltages with a sensing range up to 26V. Thanks to its 12‑bit resolution ADC, it delivers precise readings while minimizing voltage drop and power loss.

Key Features

• Operating voltage: 3.0V – 5.5V (single supply)
• Bus voltage sensing range: 0V – 26V
• Measures voltage, current, and power directly
• Programmable gain amplifier and calibration register
• Direct output in amperes and watts
• I2C address adjustable (up to 16 combinations)
• Communication speed: Fast mode (400 kHz), High‑speed mode (2.56 MHz)
• Programmable averaging (up to 128 samples) for noise reduction
• Typical quiescent current: 0.7 mA

Ideal For

• IoT projects
• Power monitoring systems
• Battery charging circuits
• Embedded development boards (Arduino, Raspberry Pi, ESP32)

Product Specifications