INA3221-Q1
- Qualified for automotive applications
- AEC-Q100 qualified
with the following results:
- Device temperature grade 1: –40°C to 125°C
- Functional Safety-Capable
- Senses bus voltages from 0V to 26V
- Reports shunt and bus voltage
- High accuracy:
- Offset voltage: ±80µV (maximum)
- Gain error: 0.25% (maximum)
- Configurable averaging options
- Four programmable addresses
- Programmable alert and warning outputs
- Power-supply operation: 2.7V to 5.5V
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 0V to 26V. The device is powered from a single 2.7V to 5.5V supply, and draws 350µA (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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | INA3221-Q1 AEC-Q100, 26V, Triple Channel, 13-Bit, I2C Output Current and Voltage Monitor With Alerts datasheet (Rev. D) | PDF | HTML | 2026/9/4 | ||
| 應用說明 | Understanding the I2C Bus (Rev. A) | PDF | HTML | 2026/10/19 | |||
| 應用說明 | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | 2026/4/27 | |||
| 應用說明 | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 2024/11/18 | |||
| 應用說明 | Digital Interfaces for Current Sensing Devices (Rev. A) | PDF | HTML | 2021/9/30 | |||
| 應用說明 | Getting Started with Digital Power Monitors (Rev. A) | PDF | HTML | 2021/9/2 | |||
| 功能安全資訊 | INA3221-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2020/5/20 | |||
| Application brief | Energy and Power Monitoring with Digital Current Sensors | 2017/5/25 | ||||
| EVM User's guide | INA3221EVM Rev A Model User's Guide and Software Tutorial (Rev. A) | PDF | HTML | 2012/4/23 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
INA3221EVM — INA3221 評估模組
The INA3221 evaluation module (EVM) is a platform to evaluate the main features and performance of the INA3221. The EVM supports current measurements up to 10A per channel and comes with graphical user interface (GUI) support to read and write to device registers.
SBOC424 — INA3221EVM Rev A Source Code
INA3221SW-LINUX — 適用於 INA3221 的 Linux 驅動程式
The Linux driver supports the INA3221 Triple Current/Power Monitor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline StatusAvailable in Linux Main line: Yes
Available through git.ti.com: N/A
- ina3221
SBOC425 — INA3221EVM Rev A User Software
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。
除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
SBOR021 — Power Monitor Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGV) | 16 | Ultra Librarian |