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INA3221 I2C SMBUS
Three-channel shunt current sensor
Description:
The INA3221 is a three-channel high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221 monitors both shunt dropout and bus supply voltage, in addition to programmable conversion times and averaging modes for these signals. The INA3221 offers both critical and warning alerts to detect multiple programmable overrange conditions for each channel.
The INA3221 measures bus current that can range from 0 V to 26 V. The device operates from a single 2.7 V to 5.5 V supply and draws 350 µA typical supply current. The INA3221 is rated for an operating temperature range of –40 °C to +125 °C. The I2C- and SMBUS-compatible interface has four programmable addresses.
Features
- 0V to 26V sensor bus voltage
- Shunt and bus voltage reporting
- High accuracy:
- Offset voltage: ±80µV (max)
- Gain error: 0.25% (max)
- Adjustable averaging parameters
- Four programmable addresses
- Programmable alarm and warning outputs
- Supply voltage: 2.7V to 5.5V
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