Most consumer audio sources are not differential. They have one signal wire and one ground wire which is the shield.I don't get why in the stereo implementation they don't use the L and R differential inputs as differential. Aren't audio signals just differential? So why connect the - terminal of the audio amp through a de-coupling cap to common ground, and not signal -?
It is a simple stereo audio amplifier. Its schematic showing about 40 transistors is in its datasheet. It shows a darlington differential input, a voltage amplifier and a quasi-complementary output stage. It also has a bias circuit built-in.hey, excuse me...what information can we include in the theory part of the circuit?? like how do we explain how the circuit works??
Most consumer audio sources are not differential. They have one signal wire and one ground wire which is the shield.
The (-) input of the TDA2822 is NOT the (-) terminal of the amplifier. It is a low impedance connection of its negative feedback. It would need to be buffered to have the same high input impedance of the (+) input. Then it would have a differential input.
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