Texas Instruments INA226/INA230/INA231 Voltage/Current/Power (I2C)

File:TArduinoTexasInstrumentsINA226.png

Summary

Texas Instruments INA226/INA230/INA231 high-side current and power monitor with I²C interface for precise power measurements.

Description

The **INA226/INA230/INA231 Power Monitor** measures current, voltage, and power with high accuracy. It features programmable calibration, conversion times, averaging modes, and alert functionality for overcurrent and power overload conditions. The sensor supports configurable limits for bus voltage, current, and power with latchable alerts.

Diagram:

Properties

• Enabled – Enables or disables the monitor.
• Address – I²C device address.
• Shunt Resistor – External shunt resistor value in Ohms.
• Conversion Time Bus – Bus voltage conversion time in microseconds.
• Conversion Time Shunt – Shunt voltage conversion time in microseconds.
• Averaging – Measurement averaging mode setting.
• Single Shot – Enables single-shot measurement mode.
• Power Down – Controls power down mode.
• Alerts – Alert configuration group:
  • Data Ready – Data ready alert enable.
  • Inverted – Alert signal inversion.
  • Latch – Alert latching enable.
• Limit – Measurement limit configuration group:
  • Bus Voltage Above – Upper bus voltage limit enable.
  • Bus Voltage Below – Lower bus voltage limit enable.
  • Current Above – Upper current limit enable.
  • Current Below – Lower current limit enable.
  • Power Above – Upper power limit enable.
  • Value – Limit threshold value in V/A/W.

Pins

Input Pins

• Clock – Monitor clock input.
• Reset – Reset signal input.

Output Pins

• Power (analog) – Power measurement output.
• Bus Voltage (analog) – Bus voltage measurement.
• Current (analog) – Current measurement output.
• Shunt Voltage (analog) – Shunt voltage measurement.
• Alerts: Data Ready (digital) – Data ready alert signal.
• Alerts: Limit Out (digital) – Limit detection output.
• Alerts: Overflow (digital) – Measurement overflow indication.
• Control (i2c) – I²C communication interface.

Categories

• File:TArduinoDigitalCategory.png Category Digital – Digital monitoring components.
• File:TArduinoI2CCategory.png Category I2C – I²C-enabled devices.
• File:TArduinoSensorCategory.png Category Sensors – Power measurement sensors.
• File:TArduinoMeteringCategory.png Category Metering – Energy monitoring devices.