SBOS584E November   2011  – June 2018 OPA180 , OPA2180 , OPA4180

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Low Noise (Peak-to-Peak Noise = 250 nV)
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
    2.     Pin Functions: OPA180
    3.     Pin Functions: OPA2180
    4.     Pin Functions: OPA4180
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information: OPA180
    5. 7.5 Thermal Information: OPA2180
    6. 7.6 Thermal Information: OPA4180
    7. 7.7 Electrical Characteristics: VS = ±2 V to ±18 V (VS = 4 V to 36 V)
    8. 7.8 Typical Characteristics: Table of Graphs
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Operating Characteristics
      2. 8.3.2 EMI Rejection
      3. 8.3.3 Phase-Reversal Protection
      4. 8.3.4 Capacitive Load and Stability
      5. 8.3.5 Electrical Overstress
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Bipolar ±10-V Analog Output from a Unipolar Voltage Output DAC
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Component Selection
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Discrete INA + Attenuation
      3. 9.2.3 RTD Amplifier
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.3 RTD Amplifier

The OPAx180 is excellent for use in analog linearization of resistance temperature detectors (RTDs). The circuit below (Figure 34) combines the precision of the OPAx180 amplifier and the precision reference of the REF5050 to linearize a Pt100 RTD.

OPA180 OPA2180 OPA4180 ai_rtd_amp_bos584.gif
1.

NOINDENT:

R5 provides positive-varying excitation to linearize output.
Figure 34. RTD Amplifier with Linearization