SBOSAD1A May   2024  – July 2025 INA791A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Integrated Shunt Resistor
      2. 6.3.2 Safe Operating Area
      3. 6.3.3 Short-Circuit Duration
      4. 6.3.4 Temperature Drift Correction
    4. 6.4 Device Functional Modes
      1. 6.4.1 Adjusting the Output With the Reference Pin
        1. 6.4.1.1 Reference Pin Connections for Unidirectional Current Measurements
        2. 6.4.1.2 Ground Referenced Output
        3. 6.4.1.3 Reference Pin Connections for Bidirectional Current Measurements
        4. 6.4.1.4 Output Set to Mid-Supply Voltage
      2. 6.4.2 Adjustable Gain Set Using External Resistors
        1. 6.4.2.1 Adjustable Unity Gain
      3. 6.4.3 Thermal Alert Function
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Calculating Total Error
        1. 7.1.1.1 Error Sources
        2. 7.1.1.2 Reference Voltage Rejection Ratio Error
        3. 7.1.1.3 External Adjustable Gain Error
        4. 7.1.1.4 Total Error Example 1
        5. 7.1.1.5 Total Error Example 2
        6. 7.1.1.6 Total Error Example 3
        7. 7.1.1.7 Total Error Curves
      2. 7.1.2 Signal Filtering
    2. 7.2 Typical Applications
      1. 7.2.1 High-Side, High-Drive, Solenoid Current-Sense Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout Example
    5. 7.5 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.6 Typical Characteristics

at TA = 25°C, VS = 5V, ISENSE = IS+ = 0A, VCM = 48V, VFB = VOUT, and VREF = VS / 2 (unless otherwise noted)

INA791A INA791B INA791A Input Offset Current Production DistributionFigure 5-1 INA791A Input Offset Current Production Distribution

INA791A INA791B INA791A Input Offset Current vs Temperature
Figure 5-3 INA791A Input Offset Current vs Temperature

INA791A INA791B INA791A Common-Mode Rejection Production Distribution
Figure 5-5 INA791A Common-Mode Rejection Production Distribution

INA791A INA791B Common-Mode Rejection Ratio vs Temperature
Figure 5-7 Common-Mode Rejection Ratio vs Temperature

INA791A INA791B Reference Voltage Rejection Ratio vs Temperature
Figure 5-9 Reference Voltage Rejection Ratio vs Temperature
INA791A INA791B INA791A Gain Error Production DistributionFigure 5-11 INA791A Gain Error Production Distribution
INA791A INA791B INA791A Gain Error vs TemperatureFigure 5-13 INA791A Gain Error vs Temperature

INA791A INA791B Output Voltage Swing vs Output Current
VS = 2.7V
Figure 5-15 Output Voltage Swing vs Output Current

INA791A INA791B Output Voltage Swing High vs Temperature
Adjustable Gain = 4, VREF = VS
Figure 5-17 Output Voltage Swing High vs Temperature

INA791A INA791B Package Resistance vs Temperature
Figure 5-19 Package Resistance vs Temperature

INA791A INA791B Total Input Bias Current vs Temperature
Figure 5-21 Total Input Bias Current vs Temperature

INA791A INA791B Quiescent Current vs Temperature
Figure 5-23 Quiescent Current vs Temperature

INA791A INA791B Feedback Current vs Temperature
Figure 5-25 Feedback Current vs Temperature

INA791A INA791B System Gain vs Frequency
Figure 5-27 System Gain vs Frequency

INA791A INA791B Common-Mode Rejection Ratio vs Frequency
Figure 5-29 Common-Mode Rejection Ratio vs Frequency

INA791A INA791B Input-Referred Current Noise vs Frequency
Figure 5-31 Input-Referred Current Noise vs Frequency

INA791A INA791B System Current Step Response
VREF = 1V, 100A input step
Figure 5-33 System Current Step Response

INA791A INA791B Start-Up Response
VREF = 0V
Figure 5-35 Start-Up Response
INA791A INA791B INA791B Input Offset Current Production DistributionFigure 5-2 INA791B Input Offset Current Production Distribution

INA791A INA791B INA791B Input Offset Current vs Temperature
Figure 5-4 INA791B Input Offset Current vs Temperature
INA791A INA791B INA791B Common-Mode Rejection Production DistributionFigure 5-6 INA791B Common-Mode Rejection Production Distribution

INA791A INA791B Power-Supply Rejection Ratio vs Temperature
Figure 5-8 Power-Supply Rejection Ratio vs Temperature

INA791A INA791B System Gain Error vs Input Current
Figure 5-10 System Gain Error vs Input Current
INA791A INA791B INA791B Gain Error Production DistributionFigure 5-12 INA791B Gain Error Production Distribution
INA791A INA791B INA791B Gain Error vs TemperatureFigure 5-14 INA791B Gain Error vs Temperature

INA791A INA791B Output Voltage Swing vs Output Current
VS = 5V
Figure 5-16 Output Voltage Swing vs Output Current

INA791A INA791B Output Voltage Swing Low vs Temperature
Adjustable Gain = 1, VREF = GND
Figure 5-18 Output Voltage Swing Low vs Temperature

INA791A INA791B Total Input Bias Current vs Common-Mode Voltage
Figure 5-20 Total Input Bias Current vs Common-Mode Voltage

INA791A INA791B Quiescent Current vs Supply Voltage
Figure 5-22 Quiescent Current vs Supply Voltage

INA791A INA791B Quiescent Current vs Common-Mode Voltage
Figure 5-24 Quiescent Current vs Common-Mode Voltage

INA791A INA791B Current Sense Amplifier Gain vs Frequency
Figure 5-26 Current Sense Amplifier Gain vs Frequency
INA791A INA791B Power-Supply Rejection Ratio vs Frequency
Figure 5-28 Power-Supply Rejection Ratio vs Frequency

INA791A INA791B Output Impedance vs Frequency
Figure 5-30 Output Impedance vs Frequency

INA791A INA791B 0.1Hz to 10Hz Input-Referred Current Noise
Figure 5-32 0.1Hz to 10Hz Input-Referred Current Noise

INA791A INA791B Common-Mode Transient Response
INA791
Figure 5-34 Common-Mode Transient Response