SBOS758F April   2016  – June 2024 THS6212

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 VS = 12 V
    6. 5.6 Electrical Characteristics VS = 28 V
    7. 5.7 Timing Requirements
    8. 5.8 Typical Characteristics: VS = 12 V
    9. 5.9 Typical Characteristics: VS = 28 V
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Voltage and Current Drive
      2. 6.3.2 Driving Capacitive Loads
      3. 6.3.3 Distortion Performance
      4. 6.3.4 Differential Noise Performance
      5. 6.3.5 DC Accuracy and Offset Control
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Wideband Current-Feedback Operation
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Dual-Supply Downstream Driver
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
          1. 7.2.2.2.1 Line Driver Headroom Requirements
          2. 7.2.2.2.2 Computing Total Driver Power for Line-Driving Applications
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    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

7.2.1 Wideband Current-Feedback Operation

The THS6212 provides the exceptional ac performance of a wideband current-feedback op amp with a highly linear, high-power output stage. Requiring only 19.5 mA of quiescent current, the THS6212 has an output swing of 49 Vpp (100-Ω load) coupled with over 650 mA current drive (25 Ω load). This low-output headroom requirement, along with biasing that is independent of the supply voltage, provides a remarkable 28-V supply operation. The THS6212 delivers greater than 285-MHz bandwidth driving a 2-VPP output into 100 Ω on a 28-V supply. Previous boosted output stage amplifiers typically suffer from very poor crossover distortion when the output current goes through zero. The THS6212 achieves a comparable power gain with improved linearity. The primary advantage of a current-feedback op amp over a voltage-feedback op amp is that ac performance (bandwidth and distortion) is relatively independent of signal gain. Figure 7-1 shows the dc-coupled, gain of 10 V/V, dual power-supply circuit configuration used as the basis of the 28-V Electrical Characteristics tables and Typical Characteristics sections.

THS6212 Noninverting Differential I/O Amplifier Figure 7-1 Noninverting Differential I/O Amplifier