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INA209

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具有模拟比较器的 26V、12 位、I2C 输出电流/电压/功率监控器

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数据表

INA209

正在供货
数据表 立即订购

产品详情

Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Iq (max) (mA) 1.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 1 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Iq (max) (mA) 1.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 1 Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • SENSES BUS VOLTAGES FROM 0V TO +26V
  • REPORTS CURRENT, VOLTAGE, AND POWER; STORES PEAKS
  • TRIPLE WATCHDOG LIMITS:
    • Lower Warning with Delay
    • Upper Over-limit, No Delay
    • Fast Analog Critical
  • HIGH ACCURACY: 1% MAX OVER TEMP
  • APPLICATIONS
    • SERVERS
    • TELECOM EQUIPMENT
    • AUTOMOTIVE
    • POWER MANAGEMENT
    • BATTERY CHARGERS
    • WELDING EQUIPMENT
    • POWER SUPPLIES
    • TEST EQUIPMENT

I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
  • SENSES BUS VOLTAGES FROM 0V TO +26V
  • REPORTS CURRENT, VOLTAGE, AND POWER; STORES PEAKS
  • TRIPLE WATCHDOG LIMITS:
    • Lower Warning with Delay
    • Upper Over-limit, No Delay
    • Fast Analog Critical
  • HIGH ACCURACY: 1% MAX OVER TEMP
  • APPLICATIONS
    • SERVERS
    • TELECOM EQUIPMENT
    • AUTOMOTIVE
    • POWER MANAGEMENT
    • BATTERY CHARGERS
    • WELDING EQUIPMENT
    • POWER SUPPLIES
    • TEST EQUIPMENT

I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

The INA209 is a high-side current shunt and power monitor with an I2C interface. The INA209 monitors both shunt drop and shunt bus voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The INA209 features two separate, onboard watchdog capabilities: a warning comparator and an over-limit comparator. The warning comparator is useful for monitoring lower warning limits and incorporates a user-defined delay. The over-limit comparator assists with monitoring upper limits that could require immediate system shutdown.

The INA209 also includes an analog comparator and a programmable digital-to-analog converter (DAC) that combine to provide the fastest possible responses to current overload conditions.

The INA209 can be used together with hot swap controllers that already use a current sense resistor. The INA209 full-scale range can be selected to be either within the hot-swap controller sense limits, or wide enough to include them.

The INA209 senses across shunts on buses that can vary from 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1.5mA of supply current. It is specified for operation from -25°C to +85°C.

The INA209 is a high-side current shunt and power monitor with an I2C interface. The INA209 monitors both shunt drop and shunt bus voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The INA209 features two separate, onboard watchdog capabilities: a warning comparator and an over-limit comparator. The warning comparator is useful for monitoring lower warning limits and incorporates a user-defined delay. The over-limit comparator assists with monitoring upper limits that could require immediate system shutdown.

The INA209 also includes an analog comparator and a programmable digital-to-analog converter (DAC) that combine to provide the fastest possible responses to current overload conditions.

The INA209 can be used together with hot swap controllers that already use a current sense resistor. The INA209 full-scale range can be selected to be either within the hot-swap controller sense limits, or wide enough to include them.

The INA209 senses across shunts on buses that can vary from 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1.5mA of supply current. It is specified for operation from -25°C to +85°C.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 High-Side Measurement, Bi-Directional Current/Power Monitor with I2C Interface 数据表 (Rev. B) 2009-3-27
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
应用简报 监测电流以识别多种超限情况 (Rev. C) PDF | HTML 英语版 (Rev.C) PDF | HTML 2025-10-13
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
应用简报 集成式电流检测模数转换器 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022-12-2
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
应用手册 Understanding the I2C Bus PDF | HTML 2015-6-30
用户指南 USB DIG Platform User's Guide (Rev. A) 2010-2-14
更多文献资料 INA209EVM Quick-Start Guide (Video) (Rev. A) 2008-4-17

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）。

代码示例或演示

SBOC251 — INA209EVM Source Code

支持的产品和硬件
驱动程序或库

INA209SW-LINUX — 用于 INA209 的 Linux 驱动程序

Linux 驱动程序支持 INA209 电流/功率监测计。Linux 驱动程序支持通过 I2C 总线和接口与硬件监测子系统进行通信。

Linux 主线状态

在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用

支持的器件：
  • ina209
Linux 源文件

与该器件关联的文件为：

  1. drivers/hwmon/ina209.c
  2. Documentation/devicetree/bindings/i2c/ina209.txt
  3. linux/platform_data/ina2xx.h
  4. Documentation/hwmon/ina209
源文件

drivers/hwmon/ina209.c

Linux (...)
支持的产品和硬件
评估模块 (EVM) 用 GUI

SBOC248 — INA209EVM Software

支持的产品和硬件
计算工具

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。

支持的产品和硬件
计算工具

CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool

该 Excel 计算器比较两个和五个标准电流检测放大器，提供包含每个器件基本参数的图表。该计算器还获取用户系统条件输入，例如共模电压、电源电压、分流电阻值和容差，然后绘制可调电流范围内的误差曲线。此外，计算器根据满量程输入电压除以测量电流上限值的计算结果，输出分流上限值 (mΩ)。
支持的产品和硬件
计算工具

SBOR021 — Power Monitor Tool

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 16 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

支持和培训

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