SLPS785A December   2023  – October 2025 RES11A

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 Parameter Measurement Information
    1. 6.1 DC Measurement Configurations
    2. 6.2 AC Measurement Configurations
    3. 6.3 Error Notation and Units
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Ratiometric Matching for Low Gain Error
        1. 7.3.1.1 Absolute and Ratiometric Tolerances
      2. 7.3.2 Ratiometric Drift
        1. 7.3.2.1 Long-Term Stability
      3. 7.3.3 Predictable Voltage Coefficient
      4. 7.3.4 Ultra-Low Noise
    4. 7.4 Device Functional Modes
      1. 7.4.1 Per-Resistor Limitations
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Amplifier Feedback Circuit
        1. 8.1.1.1 Amplifier Feedback Circuit Example
      2. 8.1.2 Voltage Divider Circuit
        1. 8.1.2.1 Voltage Divider Circuit Example
        2. 8.1.2.2 Voltage-Divider Circuit Drift
      3. 8.1.3 Discrete Difference Amplifier
        1. 8.1.3.1 Difference-Amplifier Common-Mode Rejection Analysis
        2. 8.1.3.2 Difference-Amplifier Gain Error Analysis
      4. 8.1.4 Discrete Instrumentation Amplifiers
      5. 8.1.5 Fully Differential Amplifier
      6. 8.1.6 Unconventional Circuits
        1. 8.1.6.1 Single-Channel Voltage Divider
        2. 8.1.6.2 Single-Channel Amplifier Gain
          1. 8.1.6.2.1 Gain Scaling the RES60A-Q1 With the RES11A
      7. 8.1.7 Unconventional Instrumentation Amplifiers
    2. 8.2 Typical Application
      1. 8.2.1 Common-Mode Shifting Input Stage
        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 Examples
  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. 9.1.1.2 TINA-TI™ Simulation Software (Free Download)
        3. 9.1.1.3 TI Reference Designs
        4. 9.1.1.4 Analog Filter Designer
    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

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DDF|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.1.1 Amplifier Feedback Circuit

The RES11A is typically used to implement the feedback path of an operational amplifier, and thus set the circuit gain. This circuit is configured as either inverting or noninverting, with the input voltage being applied to that respective amplifier input, and is generically drawn in the following figure.

RES11A Inverting Amplifier ConfigurationFigure 8-1 Inverting Amplifier Configuration
RES11A Noninverting Amplifier ConfigurationFigure 8-2 Noninverting Amplifier Configuration

For the inverting circuit configuration:

Equation 22. G Inv = R X R Y
Equation 23. V OUT = –V IN × G Inv

For the noninverting circuit configuration:

Equation 24. G Noninv = 1 + R X R Y
Equation 25. V OUT = V IN × G Noninv

Typically, RX = RG and RY = RIN, allowing noninverting gains from 2 to 11 to be achieved. Inverting gains range in this configuration from –1 to –10. More unique configurations are also possible; see also Section 8.1.6.2.

Equation 26. G x = G nom 1 + t D x