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Cirrus Logic AN168 Instruction Manuals and User Guides

We have 1 Instruction Manual and User Guide for AN168 Cirrus Logic

Cirrus Logic AN168 User Manual, 36 pages
Cirrus Logic / Hardware
Recognized languages:   English
Pages: 36
Size: 342 KB
Show table of contents

Document Outline

  • Table of Contents
  • List of Figures
  • 1. Design Process and Considerations
    • 1.1 Design Flow
    • 1.2 Mechanical Design
      • 1.2.1 Selecting the Acoustic Components
      • 1.2.2 Placing the Speaker and Microphone
    • 1.3 Electrical Design
      • 1.3.1 Selecting the Speaker Driver
      • 1.3.2 Setting the Speaker Driver Gain
      • 1.3.3 Volume Control
      • 1.3.4 Acoustic Coupling
      • 1.3.5 Setting the Mic Preamp Gain
      • 1.3.6 Acoustic Sidetone
    • 1.4 Echo Canceler Parameter Optimization
      • 1.4.1 Starting Example
      • 1.4.2 Tweaking the Parameters
      • 1.4.3 Network Sidetone
      • 1.4.4 Loop Gain
    • 1.5 Tests
      • 1.5.1 Acoustic Coupling
      • 1.5.2 Acoustic Distortion
      • 1.5.3 Acoustic ERLE
      • 1.5.4 Call Testing and Coefficient Optimization
    • 1.6 Layout Guidelines
      • 1.6.1 CS6422-specific guidelines
      • 1.6.2 Car-Kit guidelines
    • 1.7 Quick list of important points:
      • 1.7.1 Reset and configuration timing
      • 1.7.2 Distortion
      • 1.7.3 Speaker/mic placement
      • 1.7.4 Acoustic coupling
      • 1.7.5 Training sequence
  • 2. Appendix - example speaker driver circuits
    • 2.1 Example 1: TDA1519A -- 15 Watts into 4W
    • 2.2 Example 2: TDA2003 -- 3Watts into 4W
    • 2.3 Example 3: TDA1905 -- 2.5Watts into 4W
    • 2.4 Example 4: LM1877-- 2Watts into 4W
    • 2.5 Example 5: LM4861-- 1Watt into 4W
  • 3. Revision History
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