SBOSAD5D December   2022  – November 2024 INA351

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Gain-Setting
        1. 7.3.1.1 Gain Error and Drift
      2. 7.3.2 Input Common-Mode Voltage Range
      3. 7.3.3 EMI Rejection
      4. 7.3.4 Typical Specifications and Distributions
      5. 7.3.5 Electrical Overstress
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Reference Pin
      2. 8.1.2 Input Bias Current Return Path
    2. 8.2 Typical Applications
      1. 8.2.1 Resistive-Bridge Pressure Sensor
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 PSpice® for TI
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.1 Gain-Setting

Equation 1 is the gain equation for INA351ABS:

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, Equation 3 is the gain equation for INA351CDS:

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 7-1 provides how to choose different gain options across the INA351ABS and INA351CDS. The 60-kΩ, 90-kΩ, and 145-kΩ resistors mentioned are all typical values of the on-chip resistors.

Table 7-1 Gain Selection Table
DEVICEGAIN SELECT (GS)SELECTED GAIN
INA351ABSHigh or No Connect20
Low10
INA351CDSHigh or No Connect50
Low30