SNAS344F December   2005  – June 2025 LM4674

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Key Specifications
  5. 4 DESCRIPTION
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Operating Ratings
    3. 6.3 Electrical Characteristics VDD = 3.6V
    4. 6.4 Typical Performance Characteristics
  8. 7 Block Diagrams
  9. 8 Application Information
    1. 8.1  General Amplifier Function
    2. 8.2  Differential Amplifier Explanation
    3. 8.3  Power Dissipation and Efficency
    4. 8.4  Shutdown Function
    5. 8.5  Single-Ended Audio Amplifier Configuration
    6. 8.6  Audio Amplifier Power Supply Bypassing/Filtering
    7. 8.7  Audio Amplifier Input Capacitor Selection
    8. 8.8  Audio Amplifier Gain Setting
    9. 8.9  Output Filter Considerations
    10. 8.10 Layout Guidelines
    11. 8.11 LM4674TL Demo Board Schematic
    12. 8.12 LM4674TL Demonstration Board Layout
    13. 8.13 LM4674SQ Demo Board Schematic
    14. 8.14 LM4674SQ Demonstration Board Layout
    15. 8.15 Trademarks
  10. 9 Typical Application
  11. 10Development Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Device Nomenclature Boilerplate
  12. 11Receiving Notification of Documentation Updates
  13. 12Electrostatic Discharge Caution
  14. 13Glossary
  15. 14Revision History
  16. 15Mechanical, Packaging, and Orderable Information

9 Typical Application

LM4674 Typical Audio Amplifier Application Circuit
Ci = 1μF
CS1 = 1μF
CS2 = 0.1μF
Figure 9-1 Typical Audio Amplifier Application Circuit
LM4674 DSBGA (Top View) See YZR0016 Package Figure 9-2 DSBGA (Top View)
See YZR0016 Package
LM4674 WQFN (Top View) See RGH0016A Package Figure 9-3 WQFN (Top View)
See RGH0016A Package

(Figure 9-1)

Components Functional Description
1. CS Supply bypass capacitor which provides power supply filtering. Refer to the Section 8.7 section for information concerning proper placement and selection of the supply bypass capacitor.
2. Ci Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals.