ZHCS793C March   2012  – January 2021 INA282-Q1 , INA283-Q1 , INA284-Q1 , INA285-Q1 , INA286-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Selecting RS
      2. 7.3.2 Effective Bandwidth
      3. 7.3.3 Transient Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Reference Pin Connection Options
        1. 7.4.1.1 Unidirectional Operation
          1. 7.4.1.1.1 Ground Referenced Output
          2. 7.4.1.1.2 V+ Referenced Output
        2. 7.4.1.2 Bidirectional Operation
          1. 7.4.1.2.1 External Reference Output
          2. 7.4.1.2.2 Splitting the Supply
          3. 7.4.1.2.3 Splitting an External Reference
      2. 7.4.2 Shutdown
      3. 7.4.3 Extended Negative Common-Mode Range
      4. 7.4.4 Calculating Total Error
        1. 7.4.4.1 Example 1 INA282-Q1
        2. 7.4.4.2 Example 2 INA286-Q1
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Connections
    2. 8.2 Typical Applications
      1. 8.2.1 Current Summing
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedures
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Current Differencing
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 静电放电警告
  12. 12术语表
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.2.2 Current Differencing

Occasionally, the need arises to confirm that the current into a load is identical to the current out of a load, usually as part of diagnostic testing or fault detection. This situation requires precision current differencing, which is the same as summing except that the two amplifiers have the inputs connected opposite of each other.

GUID-74E3FCD9-0336-4501-A815-D8E7A0EA8F1B-low.gif
NOTE: The voltage applied to the reference inputs must not exceed 9 V.
Figure 8-4 Current Differencing Using an INA28x-Q1 Device
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