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.
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| SubFamily | Current/voltage/power monitors |
| Common mode voltage | 26 |
| Rating | Catalog |
| Features | Bi-directional^Programmable Gain |
| Supply Voltage | 3 |
| Input offset (+/-) | 50^100 |
| Input offset drift (+/-) | 0.1 |
| Gain | 1^0.5^0.25^0.125 |
| Gain error | 0.5^0.3 |
| CMRR | 120 |
| Bandwidth | 5.5 |
| Iq | 1 |
| Approx. price | 0.80 | 1ku |
| Operating temperature range | -40 to 125 |
| Package Group | SOIC|8 |
| Package size: mm2:W x L (PKG) | [pf]8SOIC[/pf]: 29 mm2: 6 x 4.9 (SOIC|8) |