INA226 IIC Bidirectional current sensor

High-Precision 16-Bit ADC Architecture: Features a 16-bit delta-sigma ADC that measures both shunt voltage drops and bus voltages with high resolution and low offset drift.

Bi-Directional High-Side Current & Power Monitoring: Concurrently samples current flow in both charging and discharging directions across a wide bus voltage range from 0V to +36V DC.

I2C / SMBus Digital Telemetry Interface: Communicates directly over I²C with up to 16 programmable slave addresses, offloading complex power and current calculations from the host MCU.

Programmable Alert & Interrupt Output Pin: Outfitted with an onboard ALE (Alert) pin to trigger hardware-level interrupts upon overcurrent, under-voltage, or over-voltage conditions.

Low-Resistance Onboard Shunt Resistor: Equipped with an R100 (0.1 Ω) precision shunt resistor for reliable current sensing and minimal heat generation across the sense line.

Housing & Board Material: High-grade FR-4 glass-epoxy PCB with surface-mount INA226 IC, 0.1 Ω precision shunt resistor, screw terminal blocks, and gold/tin-plated header pins.

Technical Specifications:

Operating Voltage (V_CC): 2.7V - 5.5V DC.

Target Bus Voltage Range (V_BUS): 0V - +36V DC.

Shunt Resistor Value: R100 (0.1 Ω / 100mΩ).

Communication Protocol: I²C / SMBus (SCL, SDA).

Color: Blue PCB with Black Terminal Block and Silver Pins.

Usage Advice: Connect VCC (3.3V-5V), GND, SCL, and SDA to your microcontroller; wire your power source and load through the IN+ and IN- terminal block pads to measure bi-directional current and bus voltage.

Maintenance: Keep terminal screws properly tightened; store in anti-static packaging and keep the circuit board free from moisture, metallic dust, and flux residue.

Essential High-Fidelity Power Telemetry Node: Position as a top-grade 16-bit digital current and power sensor for solar battery charge controllers, power distribution units (PDUs), and battery management systems (BMS).

Highlight 16-Bit Resolution & Direct Power Calculation: Emphasize how 16-bit ADC sampling and automatic internal multiplication deliver accurate current (mA) and power (mW) readings directly over I²C without floating-point math overhead on the CPU.

Recommended Cross-Sell Add-ons: Pair with INA219 Bi-directional DC Current Power Supply, INA169 Analog DC Current Sensor 60V 5A, WCS1500 Hall Effect Base Linear Current Sensor, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Current Sensor collection page as your high-accuracy I²C bi-directional current and power monitor module.