Audio Power Amplifiers

Audio Power

Audio power amplifiers

Designer’s guide - October 1996

AUDIO AMPLIFIER ICS DESIGNER’S GUIDE Contents
Section 1 2 Page

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Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Product survey and page reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 2-1 In application sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 In power output sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Audio amplifier ICs for portable radio/audio equipment . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 3-1 Audio amplifier ICs for car radios/power boosters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Audio amplifier ICs for mains-powered systems including hi-fi and TV sound . . . . . . . . . . . . . . . . 5-1

3 4 5

Appendices 1 Further information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . A-2 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Application notes and leaflet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 2 Index of audio amplifier ICs . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

NOTE Purchase of Philips I2C components conveys a license under the Philips I2C patent to use the components in the I2C system, provided the system conforms to the I2C specifications defined by Philips.

Audio Amplifier ICs

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INTRODUCTION

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INTEGRATED POWER WITH PHILIPS AUDIO AMPLIFIER ICs
Fewpeople realize that one of the world’s first ICs was an audio power amplifier from Philips. This delivered a mere 25 mW into a hearing-aid earpiece and incorporated just three transistors and 2 resistors. Not surprisingly, we’ve made many advances since that initial introduction. Advances that have led to ICs such as the TDA8551 incorporating digital volume control with a control range of more than80 dB. Or the hi-fi TDA1514A, which can deliver 50 W – more than two thousand times the power of that first integrated amplifier. These are just two of the extensive range of audio ICs we now supply for a whole host of applications – including portable radio and recorders, car radios, multimedia systems, hi-fi TV, radio and music centres, and digital audio systems. What’s more, advanced internalprotection circuitry completely eliminates danger of damage from thermal runaway, shortcircuits and electrostatic discharge. Providing a level of circuit reliability formerly the exclusive preserve of professional systems, and, moreover, providing you with a solid guarantee of quality and reliability in your own systems.

A valuable aid to designers
In the following pages you’ll find our completerange of audio amplifiers. Intended principally as a designer’s first selection guide, the pages give the most important parameters, or at least, those that feature prominently when design criteria are initially being considered. Used in conjunction with our Data Handbook IC01 (which gives more detailed information), this guide provides audio system designers with a ready means of selecting themost appropriate components for their designs. The publication is divided into three application areas: portable radio/audio, car radio and mains-powered systems. Many products, however, may be suitable for several application areas: car audio systems and mains-powered multimedia PCs for example. What’s more, many of today’s applications for audio amplifier ICs, e.g. musical greeting cards, were...