JAJSHS8E June   2011  – August 2019 TPA6211A1-Q1

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     Device Images
      1.      アプリケーション回路
  4. 改訂履歴
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Operating Characteristics
    7. 6.7 Dissipation Ratings
    8. 6.8 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Advantages of Fully Differential Amplifiers
      2. 7.3.2 Fully Differential Amplifier Efficiency and Thermal Information
      3. 7.3.3 Differential Output Versus Single-Ended Output
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Differential Input Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Resistors (RI)
          2. 8.2.1.2.2 Bypass Capacitor (CBYPASS) and Start-Up Time
          3. 8.2.1.2.3 Input Capacitor (CI)
          4. 8.2.1.2.4 Band-Pass Filter (RI, CI, and CF)
            1. 8.2.1.2.4.1 Step 1: Low-Pass Filter
            2. 8.2.1.2.4.2 Step 2: High-Pass Filter
            3. 8.2.1.2.4.3 Step 3: Additional Low-Pass Filter
          5. 8.2.1.2.5 Decoupling Capacitor (CS)
          6. 8.2.1.2.6 Using Low-ESR Capacitors
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Other Application Circuits
  9. Power Supply Recommendations
    1. 9.1 Power Supply Decoupling Capacitor
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 ドキュメントの更新通知を受け取る方法
    2. 11.2 コミュニティ・リソース
    3. 11.3 商標
    4. 11.4 静電気放電に関する注意事項
    5. 11.5 Glossary
  12. 12メカニカル、パッケージ、および注文情報

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

Advantages of Fully Differential Amplifiers

Input coupling capacitors are not required. A fully differential amplifier with good CMRR, such as the TPA6211A1-Q1 device, allows the inputs to be biased at voltage other than mid-supply. For example, if a DAC has a lower mid-supply voltage than that of the TPA6211A1-Q1 device, the common-mode feedback circuit compensates, and the outputs are still biased at the mid-supply point of the TPA6211A1-Q1 device. The inputs of the TPA6211A1-Q1 device can be biased from 0.5 V to VDD – 0.8 V. If the inputs are biased outside of that range, input coupling capacitors are required.

A Mid-supply bypass capacitor, CBYPASS, is not required. The fully differential amplifier does not require a bypass capacitor. Any shift in the mid-supply voltage affects both positive and negative channels equally, thus canceling at the differential output. Removing the bypass capacitor slightly worsens power supply rejection ratio (kSVR), but a slight decrease of kSVR can be acceptable when an additional component can be eliminated (see Figure 17).

The RF-immunity is improved. A fully differential amplifier cancels the noise from RF disturbances much better than the typical audio amplifier.