ZHCSAQ1D
February 2013 – July 2022
INA231
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements: I2C Bus
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Basic Analog-to-Digital Converter (ADC) Functions
8.3.1.1
Power Calculation
8.3.1.2
ALERT Pin
8.4
Device Functional Modes
8.4.1
Averaging and Conversion Time Considerations
8.5
Programming
8.5.1
Configure, Measure, and Calculate Example
8.5.2
Programming the Power Measurement Engine
8.5.2.1
Calibration Register and Scaling
8.5.3
Simple Current Shunt Monitor Usage (No Programming Necessary)
8.5.4
Default INA231 Settings
8.5.5
Writing to and Reading from the INA231
8.5.5.1
Bus Overview
8.5.5.1.1
Serial Bus Address
8.5.5.1.2
Serial Interface
8.5.5.2
High-Speed I2C Mode
8.5.6
SMBus Alert Response
8.6
Register Maps
8.6.1
Configuration Register (00h, Read/Write)
8.6.1.1
AVG Bit Settings [11:9]
8.6.1.2
VBUS CT Bit Settings [8:6]
8.6.1.3
VSH CT Bit Settings [5:3]
8.6.1.4
Mode Settings [2:0]
8.6.2
Shunt Voltage Register (01h, Read-Only)
8.6.3
Bus Voltage Register (02h, Read-Only)
8.6.4
Power Register (03h, Read-Only)
8.6.5
Current Register (04h, Read-Only)
8.6.6
Calibration Register (05h, Read/Write)
8.6.7
Mask/Enable Register (06h, Read/Write)
8.6.8
Alert Limit Register (07h, Read/Write)
9
Application and Implementation
9.1
Application Information
9.1.1
Filtering and Input Considerations
9.2
Typical Applications
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
接收文档更新通知
10.3
支持资源
10.4
Trademarks
10.5
Electrostatic Discharge Caution
10.6
术语表
11
Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
YFF|12
YFD|12
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsaq1d_oa
zhcsaq1d_pm
1
特性
总线电压检测范围为 0V 至 28V
高侧或低侧检测
电流、电压和功率报告
高精度:
增益误差:0.5%(最大值)
失调电压:50μV(最大值)
可配置取平均选项
可编程警报阈值
兼容 1.8V I
2
C
电源运行:2.7V 至 5.5V
启动模式选项:
INA231A:有效转换
INA231B:低电流关断