AN7522

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AN7522 application field and working principle

AN7522 is a kind of audio amplifier with strong linearity performance, which is widely used in various audio equipments in our daily life. Its application field not only includes audio amplifier field but also covers other fields like TV, intelligent audio and other consumer electronic products. Furthermore, it can be used to drive the loudspeaker directly and for other applications.

The main features of AN7522 are its wide operating range, its low distortion, its low operating temperature, its high reliability and its small size. In addition, it can provide high output power and high input power, which make it the perfect choice for sound devices that requires high performance and low cost.

In terms of working principle, AN7522 is an audio power amplifier based on bipolar junction transistors (BJT) architecture. It provides a symmetric power supply design and can be used in both AC and DC applications. In order to provide low distortion and high output power, its circuit design features power bias transistor and variable gain amplifier, as well as its built-in protection circuits. The audio input signal is firstly amplified by the variable gain amplifier, and then it is filtered by the power transistors to reduce the distortion and to prevent the clipping.

In order to promote the sound quality, AN7522 also utilizes its unique sound synthesizing process to modify the sound wave. This process can enhance the frequency response of the output signal, improve the transient performance, reduce the noise and distortion, and give more natural sound sensation. Additionally, it can provide full audio enhancement with digital surround sound and acoustic equalization.

In short, AN7522 is a robust and efficient audio amplifier device with strong linearity performance, wide operating range, low distortion and high output power, which makes it an ideal choice for audio applications. Moreover, its built-in sound synthesize process and various audio enhancement functions make it a good choice for audio equipments that require high performance and low cost.

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