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.
|Input Offset (+/-) (Max) (uV)|
|Input Offset Drift (+/-) (Typ) (uV/Degrees Celsius)|
|Iq (Max) (mA)|
|Gain Error (%)|
|Small-Signal Bandwidth (Typ) (MHz)|
|CMRR (Min) (dB)|
|Vs (Min) (V)|
|Vs (Max) (V)|
|Common Mode Range (Min)|
|Common Mode Range (Max)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|