BU7843AGU-E2

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Audio Special Purpose is a very broad field, BU7843AGU-E2 is one component within this field. It is used to maximize the efficiency and audio quality of the system while minimizing power consumption.

BU7843AGU-E2 is an integrated circuit, it contains an audio amp, preamp, and limiter in one package. It includes a low-noise amplifier featuring an outstanding power-efficiency with distortion-reduction for stereo audio applications. It is resistant to both instable power supply and thermal fluctuations, and provides low output noise/ click and pop. BU7843AGU-E2 particularly suits for systems with limited space.

The application field of BU7843AGU-E2 includes car audio, wireless and wired audio phones, portable audio, and karaoke systems. It is also suitable for pan-Asian audio products, and all those are power requirements.

BU7843AGU-E2, in some cases, can be used as an audio amplifier and power amplifier. This can be achieved by changing the pin information during installation to meet different requirements.

The working principle of the BU7843AGU-E2 involves three main parts. First, an audio amplifier consisting of an input circuit, volume control circuit and EQ (equalizer), serves as a pre-amplifier. The preamp then feeds the audio signal to the power amplifier circuit to increase the signal level. Finally, a limiter circuit is included to reduce fluctuations of the audio before sent to the speaker, for better sound quality.

It is worth mentioning that the amplifier works based on the compensation displacement principle. The displacement input is converted by the amplifier circuit to electric current in proportion to the displacement. For instance, the larger the displacement, the higher the electric current will be. In addition, the transistor will consume less power due to lower output resistance. Therefore, BU7843AGU-E2 offers powerful and efficient sound performance, as well as great effects of noise cancellation.

In conclusion, BU7843AGU-E2 is a well-designed IC that covers the field of audio special purpose. It is a viable choice for car audio, wireless and wired audio phones, portable audio, and karaoke systems, helping to maximize the efficiency and audio quality of the system autonomously while work with minimum power consumption.

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