JAJSIB3D August   2017  – February 2021 THS4561

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  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
    5. 7.5 Electrical Characteristics: VS+ – VS– = 5 V to 12 V
    6. 7.6 Typical Characteristics: (VS+) – (VS–) = 12 V
    7. 7.7 Typical Characteristics: (VS+) – (VS–) = 5 V
    8. 7.8 Typical Characteristics: (VS+) – (VS–) = 3 V
    9. 7.9 Typical Characteristics: (VS+) – (VS–) = 3-V to 12-V Supply Range
  8. 8 Parameter Measurement Information
    1. 8.1 Example Characterization Circuits
    2. 8.2 Output Interface Circuit for DC-Coupled Differential Testing
    3. 8.3 Output Common-Mode Measurements
    4. 8.4 Differential Amplifier Noise Measurements
    5. 8.5 Balanced Split-Supply Versus Single-Supply Characterization
    6. 8.6 Simulated Characterization Curves
    7. 8.7 Terminology and Application Assumptions
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power-Down Mode
      2. 9.4.2 Single-Ended Source to Differential Output Mode
        1. 9.4.2.1 AC-Coupled Signal Path Considerations for Single-Ended Input to Differential Output Conversions
        2. 9.4.2.2 DC-Coupled Input Signal Path Considerations for Single-Ended to Differential Conversions
      3. 9.4.3 Differential Input to a Differential Output Mode
        1. 9.4.3.1 AC-Coupled, Differential-Input to Differential-Output Design Issues
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Differential Open-Loop Gain and Output Impedance
      2. 10.1.2 Setting Resistor Values Versus Gain
      3. 10.1.3 Noise Analysis
      4. 10.1.4 Factors Influencing Harmonic Distortion
      5. 10.1.5 Input Overdrive Performance
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Board Layout Recommendations
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 ドキュメントの更新通知を受け取る方法
    2. 13.2 サポート・リソース
    3. 13.3 Trademarks
    4. 13.4 静電気放電に関する注意事項
    5. 13.5 用語集
  14. 14Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

10.2.2 Detailed Design Procedure

The design proceeds using the techniques and tools suggested in the Design Methodology for MFB Filters in ADC Interface Applications application note. The process includes:

  • Scale the resistor values to not meaningfully contribute to the output noise produced by the THS4561 by itself
  • Select the RC ratios to hit the filter targets when reducing the noise gain peaking within the filter design
  • Set the output resistor to 10 Ω into a 2.2-nF differential capacitor
  • Add 100-pF common-mode capacitors to the load capacitor to improve common noise filtering
  • Inside the loop, add 20-Ω output resistors after the filter feedback capacitor to increase the isolation to the load capacitor
  • Include a place for a differential input capacitor (illustrated as 100 fF in Figure 10-7)