TDA audio amplifier circuits are produced in generally by Philips and SGS-THOMSON.

The most used ICs are TDA2030 and TDA2003 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.

It provides a high output current capability (up to 3.5A), very low harmonic and cross-over distortion.

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.

Typically it provides 14W output power (d 0.5) at 14V4 at 14V or 28V, the guaranteed output power is 12W on a 4 load and 8W on a 8.

Thanks to its high power capability the TDA2050 is able to provide up to 35W true rms power into 4 ohm load THD 10, VS 18V, f 1KHz and up to 32W into 8ohm load THD 10, VS 22V, f 1KHz.

Moreover, the TDA 2050 delivers typically 50W music power into 4 ohm load over 1 sec at VS 22.5V, f 1KHz.

Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4W and 8W loads even in presence of poor supply regulation, with high Supply Voltage Rejection.

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