SLVSL42C January   2026  – July 2026 OPA2486 , OPA486

PRODMIX  

  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 for OPA486
    5. 5.5 Thermal Information for OPA2486
    6. 5.6 Thermal Information for OPA4486
    7. 5.7 Electrical Characteristics
    8. 5.8 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 Input Common-Mode Range
      2. 6.3.2 Phase-Reversal Protection
      3. 6.3.3 Chopping Transients
      4. 6.3.4 EMI Rejection
      5. 6.3.5 Electrical Overstress
      6. 6.3.6 MUX-Friendly Inputs
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Basic Noise Calculations
    2. 7.2 Typical Applications
      1. 7.2.1 Instrumentation Amplifier
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Low Power Instrumentation Amplifier
      3. 7.2.3 Difference Amplifier
      4. 7.2.4 Resistance Temperature Detector (RTD)
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 PSpice® for TI
        2. 8.1.1.2 TINA-TI™ Simulation Software (Free Download)
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.2 Low Power Instrumentation Amplifier

The previous section demonstrated how to design an instrumentation amplifier that provides high impedance inputs, high common-mode rejection, and differential to single ended conversion. As shown previously, the implementation requires the use of at least three channel counts of OPAx486. In many applications, power and space on the board is strictly limited and a smaller, lower power design is desirable. Figure 7-6 demonstrates an alternative configuration to the design discussed in detail in the previous section. This design provides a 33% reduction in quiescent current consumption and can be implemented using a dual channel package for significant size improvement. The trade-off for this power and size improvement is common-mode rejection (ac in particular) and a more limited input common-mode voltage.

OPA2486 OPA486 OPA4486 Two Op Amp Instrumentation Amplifier Figure 7-6 Two Op Amp Instrumentation Amplifier