SBOS974E August   2019  – October 2024

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 = 32 V
    7. 5.7 Timing Requirements
    8. 5.8 Typical Characteristics: VS = 12 V
    9. 5.9 Typical Characteristics: VS = 32 V
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Common-Mode Buffer
      2. 6.3.2 Thermal Protection and Package Power Dissipation
      3. 6.3.3 Output Voltage and Current Drive
      4. 6.3.4 Breakdown Supply Voltage
      5. 6.3.5 Surge Test Results
    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 Broadband PLC Line Driving
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Best Design Practices
      1. 7.3.1 Do
      2. 7.3.2 Do Not
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
        1. 7.5.1.1 Wafer and Die Information
      2. 7.5.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Development Support
    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

6.1 Overview

The THS6222 is a differential line-driver amplifier with a current-feedback architecture. The device is targeted for use in line-driver applications such as narrow-band and broadband power-line communications (PLC) that are often found in smart-metering and home-networking applications.

The THS6222 is designed as a single-port differential line driver. For the THS6222 to function as a drop-in replacement for the THS6212, tie the thermal pad to VS–. The integrated common-mode buffer featured in the THS6222 reduces the number of external components required for level shifting the input common-mode voltage in PLC applications that are often ac coupled, resulting in space savings on the circuit board and reducing the overall system cost. As a result of the THS6222 architecture, the two current-feedback amplifiers (D1 and D2) cannot be used independently; therefore, always drive these amplifiers differentially.

The architecture of the THS6222 is designed to provide maximum flexibility with adjustable power modes that are selectable based on application performance requirements, and also provide an external current adjustment pin (IADJ) to further optimize the quiescent power of the device. The wide output swing (18.6 VPP) into 50‑Ω differential loads with 12‑V power supplies and high current drive of the THS6222 make the device an excellent choice for high-power, line-driving applications. By using 32‑V power supplies and with good thermal design that keep the device within the safe operating temperature, the THS6222 is capable of swinging 57 VPP into 100‑Ω loads.