0
ACTIVE
Common-mode voltage (max) (V) |
26 |
Common-mode voltage (min) (V) |
0 |
Digital interface |
I2C, SMBus |
Resolution (Bits) |
13 |
Input offset (±) (max) (µV) |
80 |
Input offset drift (±) (max) (µV/°C) |
0.5 |
Input offset drift (±) (typ) (µV/°C) |
0.1 |
Voltage gain (V/V) |
1 |
CMRR (min) (dB) |
110 |
Supply voltage (max) (V) |
5.5 |
Supply voltage (min) (V) |
2.7 |
Iq (max) (mA) |
0.35 |
Gain error (%) |
0.25 |
Gain error drift (±) (max) (ppm/°C) |
50 |
Features |
Alert Function, Bidirectional, Low-side Capable |
Number of channels |
3 |
Power measurement accuracy (%) |
0.5 |
TI functional safety category |
Functional Safety-Capable |
Rating |
Automotive |
Operating temperature range (°C) |
-40 to 125 |
VQFN (RGV)-16-16 mm² 4 x 4
The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.
The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40 °C to +125 °C. The I2C- and SMBUS-compatible interface features four programmable addresses.
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