SBOS218D December   2001  – May 2016 PGA2311

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Inputs and Outputs
      2. 7.3.2 Gain Settings
      3. 7.3.3 Daisy-Chaining Multiple PGA2311 Devices
      4. 7.3.4 Zero-Crossing Detection
      5. 7.3.5 MUTE Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Up State
    5. 7.5 Programming
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, 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

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

8.1 Application Information

The PGA2311 is commonly used as a digitally-controlled analog volume control. Analog volume is controlled through a serial interface in 0.5-dB steps, ranging from a gain of +31.5 dB down to an attenuation of −95.5 dB.

8.2 Typical Application

Figure 13 shows the recommended connections for the PGA2311. Place power-supply bypass capacitors as close to the PGA2311 package as physically possible.

PGA2311 recomm_conn_diag.gif Figure 13. Recommended Connection Diagram

8.2.1 Design Requirements

  • Wide dynamic range, +35.5 dB to –95.5 dB
  • Operate from a 5-V digital supply and ±5-V analog supplies
  • Digitally-controlled analog volume

8.2.2 Detailed Design Procedure

The PGA2311 is a complete digitally-controlled analog stereo volume controller system on a chip requiring only a controller to select the gain or attenuation through a serial interface. Figure 13 shows the basic connections to the PGA2311. Place power-supply bypass capacitors as close to the PGA2311 package as physically possible.

8.2.3 Application Curve

PGA2311 D050_SBOS218.gif Figure 14. PGA2311 Operating at 0 dB, –6 dB and –12 dB