TDA integrated circuits series are very well apreciated and used in amplifier designs and projects. TDA audio amplifier circuits are produced in generally by Philips and SGS-THOMSON.
The most used IC is TDA2030 for small audio amplifiers kits and TDA7294 for higher power amplifiers.
In this article we present some representative amplifiers schematics with TDA circuits: car and home audio amplifiers with datasheets below every circuit diagram.

TDA2003 circuits

TDA2003 is a cheap amplifier that is designed to run on single rail power supplies (unipolar). It provides a high output current capability (up to 3.5A), very low harmonic and cross-over distortion.

TDA2003 10W car radio audio amplifier
tda2003 amplifier
TDA203 datasheet – download

TDA2003 bridge 18W amplifier
TDA2003 can be used as an BCL (bridge amplifier) and car deliver up to 18W.
tda2003 bridge bcl



TDA2005 circuits

TDA2005 is a class B dual audio power amplifier specifically designed for car radio applications. Its high current capability (up to 3.5 A) and the ability to drive very low impedance loads (down to 1.6 ohms) makes this circuit a good choice for cheap power booster amplifiers.

TDA2005 stereo amplifier 2×10W
tda2005 stereo

TDA2005 bridge amplifier 20W
tda2005 bridge

TDA2005 dataheet


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