INA226 Shunt Monitor DONGKER I2C/SMBus Interface 0-36V & ±20A

Description

Product Overview

The DONGKER INA226 shunt and power monitor is engineered for high‑precision current sensing and power calculation in demanding industrial environments. Featuring a dual‑channel architecture, the device simultaneously measures the voltage drop across a shunt resistor and the bus supply voltage, delivering real‑time power data through an I2C or SMBus interface. Operating voltage ranges from 2.7 V to 5.5 V, while the measurable voltage span covers 0 V to 36 V and current measurement extends from –20 A to +20 A, providing a versatile solution for both low‑side and high‑side monitoring applications. The module’s programmable calibration value allows users to fine‑tune accuracy for specific shunt resistors, ensuring consistent performance across a variety of load conditions. Housed in a compact 7.33 × 2.44 × 0.67 inch enclosure weighing just 1.59 oz, the unit is lightweight yet rugged enough to withstand the vibrations and temperature fluctuations typical of industrial control panels. The product carries the model number “1” and is identified by ASIN B08MKSQSL9, reflecting its status as a best‑selling item in the Industrial Power Meters category, currently ranked #23.

Usage

Designed for seamless integration with micro‑controller platforms, the INA226 monitor excels in applications such as motor drive monitoring, battery management systems, and safety inspection equipment. Its I2C/SMBus compatibility means it can be connected to popular development boards like Arduino, Raspberry Pi, or STM32, allowing engineers to quickly prototype and deploy power monitoring solutions. In a manufacturing setting, the device can be used to track energy consumption of individual machines, enabling predictive maintenance and reducing downtime. For safety inspection tools, the ±20 A current range provides the ability to detect fault currents and trigger protective actions. The monitor also fits well within portable diagnostic kits, where its small footprint and low power draw (2.7 V–5.5 V) extend battery life while delivering reliable data. Whether installed on a printed circuit board or mounted on a DIN rail, the INA226 offers flexibility for both prototype and production environments.

Why Choose Us

Choosing DONGKER means selecting a partner committed to quality, reliability, and responsive support. Each INA226 unit undergoes rigorous testing to verify calibration accuracy, temperature stability, and communication integrity before leaving the factory. The manufacturer provides comprehensive documentation, including datasheets, application notes, and reference firmware, empowering customers to accelerate development cycles. DONGKER’s after‑sales service team is available to address technical inquiries, assist with integration challenges, and supply replacement parts when needed. The product’s high best‑seller rank reflects strong customer satisfaction and confidence in its performance. Additionally, DONGKER offers a straightforward return policy and warranty coverage, ensuring that any unexpected issues are resolved promptly. By investing in this monitor, users benefit from a proven solution that combines precision engineering with dedicated customer care.

Key Features

• Accurate current and power measurement with programmable calibration for tailored precision.
• Wide voltage (0‑36 V) and current (‑20 A to +20 A) ranges cover diverse industrial and safety applications.
• I2C/SMBus interface enables easy integration with popular micro‑controller platforms and rapid prototyping.
• Compact, lightweight enclosure (7.33 × 2.44 × 0.67 in, 1.59 oz) fits seamlessly into tight spaces and portable kits.
• Dedicated DONGKER after‑sales support ensures reliable assistance, documentation, and warranty coverage.

FAQ

What is the recommended shunt resistor value for optimal accuracy?

The ideal shunt resistor depends on the expected current range and desired voltage drop. For most applications measuring up to 20 A, a 0.01 Ω resistor provides a 200 mV drop at full scale, balancing resolution and power dissipation.

Can the INA226 be used for both high‑side and low‑side current sensing?

Yes. The device’s differential measurement capability allows it to be placed either above (high‑side) or below (low‑side) the load, as long as the shunt resistor is correctly positioned and the voltage limits are respected.

How does the SMBus compatibility differ from standard I2C?

SMBus adds optional features such as packet error checking and timeout mechanisms, which improve reliability in noisy industrial environments. The INA226 supports both protocols, so you can select the one that best matches your system requirements.

Is there a software library available for Arduino or other platforms?

DONGKER provides example code and libraries for Arduino, Raspberry Pi, and STM32, simplifying the process of reading voltage, current, and power registers via I2C.

What warranty does DONGKER offer for this product?

The INA226 comes with a one‑year limited warranty covering manufacturing defects. DONGKER’s support team can assist with warranty claims and provide replacement units if necessary.