INA219AIDR

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1. Description

The INA219AIDR 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 INA219AIDR is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications. The INA219AIDR 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.

2. Features 

    1. Senses Bus Voltages from 0 to 26 V

    2. Reports Current, Voltage, and Power

    3. 16 Programmable Addresses

    4. High Accuracy: 0.5% (Maximum) Over Temperature (INA219B)

    5. Filtering Options

    6. Calibration Registers

    7. SOT23-8 and SOIC-8 Packages

3. Applications

    1. Servers

    2. Telecom Equipment 

    3. Notebook Computers

    4. Power Management

    5. Battery Chargers

    6. Welding Equipment

    7. Power Supplies

    8. Test Equipment