INA219

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community INA219 SBOS448G – AUGUST 2008 – REVISED DECEMBER 2015 INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface 1 Features 1 Senses Bus Voltages from 0 to 26 V Reports Current, Voltage, and Power 16 Programmable Addresses High Accuracy: 0.5% (Maximum) Over Temperature (INA219B) Filtering Options Calibration Registers SOT23-8 and SOIC-8 Packages 2 Applications Servers Telecom Equipment Notebook Computers Power Management Battery Chargers Welding Equipment Power Supplies Test Equipment 3 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) INA2...