INA226 Voltage and Current Module

The INA226 Voltage and Current Monitoring Module is a high-precision power monitoring device designed to measure bus voltage, bidirectional current, and power consumption in electronic circuits. It is based on the reliable INA226 developed by Texas Instruments and communicates through an I²C interface, making it easy to integrate with platforms like Arduino Uno, ESP32, and Raspberry Pi.

This module can measure both voltage and bidirectional current flow, allowing it to detect current moving in either direction. It is ideal for battery monitoring, power supply analysis, solar energy systems, embedded electronics, and IoT power monitoring applications.

Key Features

• Measures bus voltage, current, and power consumption

• Bidirectional current detection (–20 A to +20 A)

• High-precision 16-bit ADC for accurate measurements

• I²C communication interface

• Programmable device addresses (up to 16)

• Low power consumption (<1 mA)

• Compact module with mounting holes for easy installation

Product Specifications

• Measurement Voltage: 0 V – 36 V (negative voltages not supported)

• Measurement Current: –20 A to +20 A

• Power Supply Voltage: 2.7 V – 5.5 V

• Interface: I²C

• I²C Address: Up to 16 configurable addresses via solder pads

• Input Offset Voltage: ±10 µV

• Accuracy: ±1%

• Resolution: 16-bit

  • Current resolution: 1.25 mA

  • Voltage resolution: 1.25 mV

• Current Consumption: < 1 mA

• Dimensions: 20 mm × 27 mm

• Mounting Hole Diameter: 3 mm

Pin Description / Usage

• VCC – Power supply input (2.7 V – 5.5 V)

• GND – Power supply ground

• SDA – I²C data line

• SCL – I²C clock line

• ALERT – Multi-function alert/alarm output

• A0, A1 – I²C address configuration pins