SBOS115A June   1999  – March 2025 INA133 , INA2133

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 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 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 Gain Error and Drift
      2. 6.3.2 Input Voltage Range
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Operating Voltage
      2. 7.1.2 Input Voltage
      3. 7.1.3 Offset Voltage Trim
    2. 7.2 Typical Application
    3. 7.3 Additional Applications
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Examples
  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 (Free Software Download)
    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

6.1 Overview

The INAx133 has a high-precision operational amplifier and four trimmed, on-chip resistors. The device can be configured to make a wide variety of amplifier configurations, including difference, noninverting, and inverting configurations. The integrated, matched resistors provide an advantage over discrete implementation.

Much of the DC performance of op amp circuits depends on the accuracy of the surrounding resistors. The resistors on the INAx133 are laid out to be tightly matched. The resistors of each part are matched on-chop and tested for matching accuracy. As a result, the INAx133 provides high accuracy for specifications such as gain drift, common-mode rejection ratio, and gain error.