ZHCSOD6E December   2003  – August 2023 OPA1632

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Function
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Common-Mode Voltage
        1. 8.1.1.1 Resistor Matching
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 PowerPAD™ Integrated Circuit Package Design Considerations
        2. 8.4.1.2 Power Dissipation and Thermal Considerations
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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8.1.1 Output Common-Mode Voltage

The output common-mode voltage pin sets the dc output voltage of the OPA1632. A voltage applied to the VOCM pin from a low-impedance source can be used to directly set the output common-mode voltage. If left floating, the VOCM pin defaults to the mid-rail voltage, defined as:

Equation 1. ( V + ) + ( V - ) 2

To minimize common-mode noise, connect a 0.1-uF bypass capacitor to the VOCM pin. Output common-mode voltage causes additional current to flow in the feedback resistor network. This current is supplied by the output stage of the amplifier; therefore, additional power dissipation is created. For commonly-used feedback resistance values, this current is easily supplied by the amplifier. The additional internal power dissipation created by this current can be significant in some applications and can dictate use of the HVSSOP PowerPAD™ integrated circuit package to effectively control self-heating.