PowerWise® Design University

High-Performance Audio Amplifiers for Portable Applications


Overview: Audio is an important feature in most portable consumer electronics. Products including notebook computers, cell phones, and PDAs benefit from small single-supply mono and stereo audio power amplifiers. Notebook computers include built-in stereo speakers and provide a headphone output for private listening. Cell phone audio continues to increase in importance as MP3 and FM radio functionality is added. PDAs that include stereo audio amplifiers can double as a personal assistant and an MP3 player.

Length: 60 minutes

Published Date: April 2002

Topics covered in this online seminar include:

  • New Products
  • New Technology
    • Capacitorless Operation
  • Package Technology Overview
    • Leaded Surface-Mount Packages SO/MSOP/TSSOP
    • Leadless Leadframe Packages LD/LQ
    • microSMD Packages
  • Design Aids
    • Datasheets
    • Demonstration Boards

Presenter: Kevin Hoskins, is a Staff Applications engineer and Alvin Fok is an Applications engineer. They both wield their soldering irons at National Semiconductor Corporation's Audio Products Group in Santa Clara, California.

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