JAJSHU6C January   2011  – August 2019 DRV632

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      簡略ブロック図
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Operating Characteristics
    7. 8.7 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Line Driver Amplifiers
      2. 10.3.2 Charge-Pump Flying Capacitor and PVSS Capacitor
      3. 10.3.3 Decoupling Capacitors
      4. 10.3.4 Gain-Setting Resistor Ranges
      5. 10.3.5 Input-Blocking Capacitors
      6. 10.3.6 DRV632 UVP Operation
      7. 10.3.7 External Undervoltage Detection
    4. 10.4 Device Functional Modes
      1. 10.4.1 Using the DRV632 as a Second-Order Filter
      2. 10.4.2 Mute Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Charge-Pump Flying, PVSS and Decoupling Capacitors
        2. 11.2.2.2 Second-Order Active Low-Pass Filters
        3. 11.2.2.3 UVP Resistor Divider
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
      1. 13.1.1 Gain-Setting Resistors
    2. 13.2 Layout Example
  14. 14デバイスおよびドキュメントのサポート
    1. 14.1 デバイス・サポート
      1. 14.1.1 開発サポート
    2. 14.2 コミュニティ・リソース
    3. 14.3 商標
    4. 14.4 静電気放電に関する注意事項
    5. 14.5 Glossary
  15. 15メカニカル、パッケージ、および注文情報

10.1 Overview

Combining the TI's patented DirectPath technology with the built-in click and pop reduction circuit, the DRV632 is a 2-VRMS pop-free stereo line driver designed to avoid the use of the output DC-blocking capacitors, resulting in reduced component count and cost. The DRV632 is capable of driving 2-VRMS into a line load of 600 Ω to 10 kΩ with a 3.3-V supply voltage. The use of charge-pump flying, PVSS, and decoupling capacitors ensure the performance of the amplifier. The device has two channels with differential inputs that require DC input-blocking capacitors to block the DC portion of the audio source. These allow the DRV632 inputs to be properly biased to provide maximum performance. The DRV632 allows external gain-setting resistors to support a gain range of ±1 V/V to ±10 V/V. The gain can be configured individually for each channel. Additionally, both channels can be used as a second-order filter when the removal of out-of-band noise is required. The DRV632 has a built-in active-mute control for pop-free audio on/off, and avoids the click and pop generation by using external undervoltage detection. The device does not generate a pop or click when the power supply is removed or placed.