SBOS145B August   1993  – December 2025 INA105

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
    2. 7.2 Typical Application
    3. 7.3 Additional Applications
      1. 7.3.1 Operational Amplifier Circuits
      2. 7.3.2 Instrumentation Amplifier Circuits
      3. 7.3.3 Voltage Reference Circuits
      4. 7.3.4 Special Function Circuits
    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 Device Nomenclature
      2. 8.1.2 Development Support
        1. 8.1.2.1 PSpice® for TI
        2. 8.1.2.2 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

3 Description

The INA105 is a monolithic Gain = 1 differential amplifier consisting of a precision operational amplifier (op amp) and on-chip metal film resistor network. The resistors are laser trimmed for accurate gain and high common-mode rejection. Excellent tracking of resistors (TCR) maintains gain accuracy and common-mode rejection over temperature. The input common-mode range extends beyond the positive and negative supply rails.

The differential amplifier is the foundation of many commonly used circuits. The INA105 provides precision circuit function without using an expensive precision resistor network. The INA105 is available in 8-pin plastic DIP, SOIC surface-mount and TO-99 metal packages.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
INA105P (PDIP, 8)9.81mm × 9.43mm
D (SOIC, 8)4.90mm × 6.00mm
LMC (TO-CAN, 8)8.96mm × 8.96mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.

 

 

INA105 Precision Unity Gain Differential AmplifierFigure 3-1 Precision Unity Gain Differential Amplifier