INA3221
- 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
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 voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.
The INA3221 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 is specified over the operating temperature range of –40°C to +125°C. The I2C- and SMBUS-compatible interface features four programmable addresses.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
INA3221EVM — INA3221 Evaluation Module
The INA3221EVM is a platform for evaluating the performance of the INA3221 under various signal, shunt, and supply conditions.
INA3221SW-LINUX — Linux Driver for INA3221
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
- ina3221
SBOC425 — INA3221EVM User Software
Supported products & hardware
Products
Digital power monitors
Hardware development
Evaluation board
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
Supported products & hardware
Products
Analog current-sense amplifiers
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors
SBOR021 — Power Monitor Tool
Supported products & hardware
Products
Digital power monitors
Digital power monitors with integrated shunt resistor
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
TIDA-050034 — Integrated power supply reference design for NXP i.MX 7D processor
The hardware design consists of DDR3L SDRAM (2x512MB), 64MB Serial NOR Flash, 8GB eMMC 5.0 iNAND, SD Card interface v3.0, 50 pin LCD Connector for external TFT display (...)
TIDA-050038 — Integrated power supply reference design for NXP i.MX 8M mini processor
TIDA-050043 — Integrated power supply reference design for NXP i.MX 6ULL processor
Package | Pins | Download |
---|---|---|
VQFN (RGV) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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