The INA226 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.
The INA226 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical of 330 µA of supply current. The device is specified over the operating temperature range between –40°C and 125\xC2°C and features up to 16 programmable addresses on the I2C-compatible interface.
| Part number | Order | Common mode voltage (Max) (V) | Common mode voltage (Min) (V) | Input offset (+/-) (Max) (uV) | Input offset drift (+/-) (Typ) (uV/C) | Gain (V/V) | Gain error (%) | Gain error drift (+/-) (Max) (ppm/°C) | CMRR (Min) (dB) | Bandwidth (kHz) | Supply voltage (Max) (V) | Supply voltage (Min) (V) | Iq (Max) (mA) | Digital interface | Features | Rating | Operating temperature range (C) | Package Group | Package size: mm2:W x L (PKG) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| INA226 |
|
36 | 0 | 10 | 0.02 | 1 | 0.1 | 50 | 126 | 3.5 | 5.5 | 2.7 | 0.42 |
I2C
SMBus |
Alert Function
Bi-directional Low-side Capable |
Catalog | -40 to 125 | VSSOP | 10 | 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10) |
| INA230 |
|
28 | 0 | 50 | 0.1 | 1 | 0.5 | 50 | 100 | 3.5 | 5.5 | 2.7 | 0.42 |
I2C
SMBus |
Alert Function
Bi-directional Low-side Capable |
Catalog | -40 to 125 | VQFN | 16 | 16VQFN: 9 mm2: 3 x 3 (VQFN | 16) |
| INA233 |
|
36 | 0 | 10 | 0.02 | 1 | 0.1 | 25 | 126 | 3.5 | 5.5 | 2.7 | 0.4 |
I2C
PMBus SMBus |
Alert Function
Bi-directional Integrated Power Accumulator Low-side Capable |
Catalog | -40 to 125 | VSSOP | 10 | 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10) |
