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Description:
The INA219 is a current shunt and power monitor with an I 2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I 2C- or SMBUS-compatible interface features 16 programmable addresses. The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.
Features:
Supply Voltage: 3.0 – 5.5 V
Voltage Measurement Range: 0 – 26 V
Current Measurement Range: 0 – 3.2 A
Power Measurement Range: 0 – 83.2 W
16 Programmable Addresses
High Accuracy: 0.5% (Maximum) Over Temperature (INA219B)
Filtering Options
Calibration Registers