INA260 Voltage, Current, Power Sensor Breakout with I2C Interface - 7Semi

🧠 What Is INA260?
A high-precision power monitoring sensor that measures:
• Voltage
• Current
• Power (calculated internally)
Based on the Texas Instruments INA260 IC.
Includes a built-in precision shunt resistor, so no external resistor is needed.
🔍 Key Features
All-in-One Measurement: Voltage + Current + Power
Built-in Shunt Resistor (Simplifies design)
High Accuracy (16-bit ADC)
I²C Digital Interface (easy communication)
Programmable Alerts (overcurrent/overvoltage)
Supports High-Side & Low-Side Sensing
Compact breakout board
📊 Technical Specifications
Parameter
Value
Operating Voltage
2.7V – 5.5V
Bus Voltage Range
0 – 36V
Current Measurement
Up to ~15A (depends on internal shunt)
ADC Resolution
16-bit
Accuracy
~0.15% gain error
Interface
I²C
I²C Addresses
Up to 16 configurable
⚙️ Pin Configuration
VCC → 3.3V / 5V
GND → Ground
SDA → I²C Data
SCL → I²C Clock
Power Terminals
VIN+ → Input from power source
VIN– → Output to load
📌 Current flows through VIN+ → VIN–.
🧠 How It Works
Current flows through the internal precision shunt resistor.
The sensor measures:
Voltage drop across shunt → Current
Bus voltage → Voltage
Internal ADC converts readings into digital values.
Sensor calculates power = voltage × current internally.
Data is sent to microcontroller via I²C.
📐 Output Data
Voltage (V)
Current (A)
Power (W)
📌 No complex calculations needed in code.
📌 Applications
Battery monitoring systems
Solar power systems
Power supply monitoring
IoT energy tracking devices
Embedded systems power analysis
Industrial automation systems
⚠️ Important Notes
More Accurate than INA219 (built-in shunt improves precision)
Higher Cost compared to basic current sensors
I²C Required (not analog output)
Good for DC systems (not designed for AC measurement)
🛠 Summary
Type: Digital voltage, current & power monitor
Interface: I²C
Range: Up to 36V bus voltage
Special Feature: Built-in shunt + internal power calculation
Use Case: Accurate power monitoring systems