ZHCSR64C december   2022  – may 2023 INA351

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Gain-Setting
        1. 8.3.1.1 Gain Error and Drift
      2. 8.3.2 Input Common-Mode Voltage Range
      3. 8.3.3 EMI Rejection
      4. 8.3.4 Typical Specifications and Distributions
      5. 8.3.5 Electrical Overstress
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Reference Pin
      2. 9.1.2 Input Bias Current Return Path
    2. 9.2 Typical Applications
      1. 9.2.1 Resistive-Bridge Pressure Sensor
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
        1. 10.1.1.1 PSpice® for TI
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 接收文档更新通知
    4. 10.4 支持资源
    5. 10.5 Trademarks
    6. 10.6 静电放电警告
    7. 10.7 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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8.3.1 Gain-Setting

The gain equation of INA351ABS can be given by Equation 1:

Equation 1. G = 1 + 180   k Ω R G  

The value of the internal gain resistor RG for INA351ABS can then be derived from the gain equation:

Equation 2. R G = 180   k Ω G - 1  

Similarly The gain equation of INA351CDS can be given by Equation 3:

Equation 3. G = 1   +   290   k Ω R G  

The value of the internal gain resistor RG for INA351CDS can then be derived from the gain equation:

Equation 4. R G =   290   k Ω G   -   1  

Table 8-1 provides how to choose different gain options across INA351ABS and INA351CDS. The 60-kΩ, 90-kΩ, and 145-kΩ resistors mentioned are all typical values of the on-chip resistors.

Table 8-1 Gain Selection Table
DEVICEGAIN SELECT (GS)SELECTED GAIN
INA351ABSHigh or No Connect20
Low10
INA351CDSHigh or No Connect50
Low30