INA219AIDCNR High-Precision Current/Power Monitor with I2C Interface 0.1% Accuracy 26V Range, Low Offset Bidirectional Sensing Tiny SOT-23 Package Programmable Calibration & Alerts

INA219AIDCNR High-Precision Current/Power Monitor with I2C Interface 0.1% Accuracy 26V Range, Low Offset Bidirectional Sensing Tiny SOT-23 Package Programmable Calibration & Alerts

Features

• Senses Bus Voltages from 0 to 26 V 1

• Reports Current, Voltage, and Power

• 16Programmable Addresses

• High Accuracy: 0.5% (Maximum) Over Temperature (INA219B)

• Filtering Options

• Calibration Registers

• SOT23-8 and SOIC-8 Packages

Applications

• Servers

• Telecom Equipment

• Notebook Computers

• Power Management

• Battery Chargers

• Welding Equipment

• Power Supplies

• Test Equipment

Description

The INA219 is a current shunt and power monitor with an I2C- 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 I2C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

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.

INFORMATION

Drawing

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