Schematic diagram of 1W stereo headphone amplifier based on TDA2822-EEWORLD

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The following circuit diagram is the schematic diagram of a 1W stereo headphone amplifier. This circuit is built on TDA2822 and is designed for portable players, radios, and other common electronic devices that can use headphones for audio output.

A 3V power supply/battery can be used to drive the headphones, providing 20mW per channel into 32 ohms. This circuit can use a small 8? speaker as an audio output, but you will need a 9V power supply, and the circuit will provide 1W of power output.

IC KA2209 is equivalent to IC TDA2822, can KA2209 be used? If TDA2822 cannot be found.

Keywords：TDA2822 amplifier Reference address：Schematic diagram of 1W stereo headphone amplifier based on TDA2822

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