Description
The INA226 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. Thedevice monitors both a shunt voltage drop and bussupply voltage. Programmable calibration value,conversion times, and averaging, combined with aninternal multiplier, enable direct readouts of current inamperes and power in watts.
The INA226 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical of 330μA of supply current. The device is specified over the operating temperature range between –40°C and125°C and features up to 16 programmable addresses on the I2C-compatible interface
Features
Senses Bus Voltages From 0 V to 36 V
• High-Side or Low-Side Sensing
• Reports Current, Voltage, and Power
• High Accuracy:
– 0.1% Gain Error (Max)
– 10 μV Offset (Max)
• Configurable Averaging Options
• 16 Programmable Addresses
• Operates from 2.7-V to 5.5-V Power Supply
• 10-Pin, DGS (VSSOP) Package
Applications
• Servers
• Telecom Equipment
• Computing
• Power Management
• Battery Chargers
• Power Supplies
• Test Equipme
Pin Description
VBUS: bus voltage input
SDA/SCL: IIC bus data and clock signal lines
ALERT: Multi-function alarm output
A0/A1: IIC address line
IN+/IN-: non-inverting analog input, inverting analog input
