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.
Feature
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Senses Bus Voltages From 0 V to 26 V
- Reports Shunt and Bus Voltage
- High Accuracy:
- Offset Voltage: ±80 μV (max)
- Gain Error: 0.25% (max)
- Configurable Averaging Options
- Four Programmable Addresses
- Programmable Alert and Warning Outputs
- Power-Supply Operation: 2.7 V to 5.5 V
