Digital Audio Amplifier Circuit Diagram. One fun and cool thing for ardent audio folks to do is switch the volume of an audio tpa3122d2 class d audio amplifier. Advantages of using this ic are low harmonic distortion compared to other ic amplifiers of similar.
Below you can see the block diagram of a basic pwm class d amplifier just like the one that we are building. An audio amplifier has two basic components. The schematic diagram for our class d amplifier circuit is shown below.
Because of this the amplifier does not generate a lot of heat and does not require a big heat sink like linear class ab amplifiers do.
For comparison the class b amplifier can only achieve a maximum efficiency of 78 5 in theory. If you need exactly 6 you can play a round with the resistance on the input. Class d audio amplifier schematic diagram. An audio amplifier has two basic components.
