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

10.3.4 Gain-Setting Resistor Ranges

The gain-setting resistors, RIN and Rfb, must be chosen so that noise, stability, and input capacitor size of the DRV632 are kept within acceptable limits. Voltage gain is defined as Rfb divided by RIN.

Selecting values that are too low demands a large input ac-coupling capacitor, CIN. Selecting values that are too high increases the noise of the amplifier. Table 1 lists the recommended resistor values for different inverting-input gain settings.

Table 1. Recommended Resistor Values

GAIN INPUT RESISTOR VALUE, RIN FEEDBACK RESISTOR VALUE, Rfb
–1 V/V 10 kΩ 10 kΩ
–1.5 V/V 8.2 kΩ 12 kΩ
–2 V/V 15 kΩ 30 kΩ
–10 V/V 4.7 kΩ 47 kΩ