【High-Precision Bidirectional Current Monitoring】 16-bit ADC resolution; ±0.1% accuracy; ±81.92A bidirectional current range; 0–36V bus voltage support; I²C/SMBus interface for easy integration with microcontrollers
【Reliable Performance and Reliability】 -40°C to +125°C operating temperature; ±40V differential input protection; ±15kV ESD protection; ultra-low power consumption 330µA in active mode; 2µA in shutdown mode
【Smart Alert System for Real-Time Monitoring】 Programmable over-current, under-voltage, and over-power thresholds; alert pin triggers instant warnings; factory-trimmed calibration ensures long-term stability and reduces drift issues
【Engineer-Friendly Design for Easy Setup】 10-pin VSSOP package; 2.7–5.5V single supply compatibility; 4.7kΩ pull-up resistors on SDA/SCL lines; low capacitive load requirements for stable I²C communication
【Wide-Voltage Energy-Saving Module for Portable Devices】 Supports 0–36V high-side or low-side measurement; 2000mAh battery life with 1.8µA sleep mode; compatible with for Arduino, for Raspberry Pi, and STM32 platforms; Suitable for battery management and motor control systems

Product Parameters

Core Chip: INA226 (TI , 16-bit ADC, Accuracy ±0.1%)

Input Voltage: 2.7V–5.5V DC (Single Supply, 3.3V/5V Compatible)

Bus Voltage Range: 0V–36V DC (Wide Voltage, High/Low-Side Monitoring)

Current Measurement: Bidirectional ±81.92A (Resolution 2.5μV/LSB)

Power Measurement: 0–210.25W (Built-In Multiplier Direct Output)

Communication: I²C/SMBus (Up to 1MHz, 16 Programmable Addresses)

Power Consumption: 330μA (Active), ≤2μA (Shutdown)

Operating Temperature: -40°C to +125°C (Reliable)

Protection: ±40V Differential Input, ±15kV ESD Protection

Package: 10-Pin VSSOP (Ultra-Thin Outline)

Key Features

High Precision: 16-bit ADC with 0.1% gain error and 10μV offset for accurate micro-current detection.

Programmable Alert: Configurable thresholds for over-current, under-voltage, or over-power alerts via open-drain ALERT pin.

Low-Power Design: 2.7V–5.5V supply with shutdown mode (≤2μA) for portable devices.

Pin Functions (Hardware Interface)

VCC (Pin 1): Power Input (2.7V–5.5V). Decouple with 10μF tantalum + 0.1μF ceramic capacitor (distance ≤3mm).

GND (Pins 4,9): System Ground. Use single-point grounding (PCB impedance ≤30mΩ).

IN+ (Pin 3): Current Sense Positive. Connect to power supply (high-side) or load negative (low-side). Wire length ≤10cm.

IN– (Pin 2): Current Sense Negative. Symmetrical routing with IN+ (spacing ≤1mm, capacitive load ≤50pF).

SDA/SCL (Pins 6–7): I²C Data/Clock. Add 4.7kΩ pull-up resistors; shield twisted pairs away from power lines.

ALERT (Pin 8): Alarm Output. Open-drain, max current 10mA. Use 10kΩ pull-up for enablement.

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