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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| 应用手册 | 将印刷电路板覆铜迹线用作电流检测 分流电阻器 | PDF | HTML | PDF | HTML | 2026-5-6 | ||
| 应用手册 | 电流检测放大器的 ESD、EOS 和闩锁效应事件的风险和预防 | PDF | HTML | 英语版 | PDF | HTML | 2024-12-11 | |
| 应用手册 | 数字电源监控器入门 (Rev. A) | 英语版 (Rev.A) | PDF | HTML | 2021-10-20 | ||
| 应用手册 | Digital Interfaces for Current Sensing Devices (Rev. A) | PDF | HTML | 2021-9-30 | |||
| 功能安全信息 | INA3221-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2020-5-20 | |||
| 应用简报 | 使用数字电流传感器进行功耗和能耗监控 | 英语版 | 2017-9-14 | |||
| 应用手册 | Understanding the I2C Bus | PDF | HTML | 2015-6-30 |
设计与开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
SBOC424 — INA3221EVM Source Code
INA3221SW-LINUX — 适用于 INA3221 的 Linux 驱动程序
Linux 驱动程序支持 INA3221 三路电流/功率监测计。Linux 驱动程序支持通过 I2C 总线进行通信,并可与硬件监控子系统交互。
Linux 主线状态在 Linux 主线中提供:是
可通过 git.ti.com 获取:不适用
- ina3221
与该器件关联的文件为:
- drivers/hwmon/ina3221.c
- Documentation/devicetree/bindings/hwmon/ina3221.txt
- Documentation/hwmon/ina3221
Linux 器件树文档 (...)
SBOC425 — INA3221EVM User Software
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面,其中显示各种常见计算列表,从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件,以稳定模数转换器 (ADC) 驱动器缓冲器电路。
除了可用作独立工具之外,该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
SBOR021 — Power Monitor Tool
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RGV) | 16 | Ultra Librarian |