AN5278

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Audio amplifiers are indispensable when it comes to audio production, blending or broadcast. The AN5278 is an audio power amplifier IC that is designed for high-powered Class AB audio amplifying applications. It has a rather powerful output power of up to 90W, which makes it a perfect choice for both home and professional uses. In this article, we’ll be looking at the AN5278’s application field and working principle.

Application Field of the AN5278 IC

The AN5278’s application field is wide, but it’s mostly used in audio products that require high power such as hi-fi stereo systems, car audio systems, speakers, and other audio accessories. It has the power output of up to 90W into a 4 ohm load, and can reach an efficiency of up to 80%. This is great for users who require high-end audio sound quality.

The power output has no effect on its ability to produce clear sound either. The IC also has an integrated thermal protection circuits, which allows it to deliver powerful audio despite its small size. This makes it ideal for users who are limited for space, such as car audio installers. Additionally, the AN5278 requires only two external components to enable operation.

Working Principle of AN5278

The AN5278 power amplifier IC operates using a proprietary Linear gain regulation technique (LGR) to achieve its high efficiency levels. This technique was developed specifically for use with audio power amplifiers to allow them to produce both low and high power levels without compromising on sound quality or power output. This technique works by detecting the input signal levels and adjusting the output signals accordingly to conserve energy and increase efficiency.

This technology also helps the IC to achieve higher output power levels without the need of an external power supply. This is because the IC uses what is called an ‘amplifier-on-chip’ feature, which enables the IC to operate directly from a supply voltage of up to 28V. With this design, the IC is able to produce a power output of up to 90W anonymously.

The IC also features a distortion-compensating circuitry to reduce distortion levels. This circuitry works by detecting distortion and correcting it before the amplified signal reaches the output. This results in clean and distortion-free audio. The AN5278 also features current limiting, which helps protect the IC from short circuit or overload conditions.

Conclusion

The AN5278 audio power amplifier IC is designed for high-powered Class AB audio amplifying applications. It has a powerful output power of up to 90W and an efficiency of up to 80%. It’s perfect for hi-fi stereo systems, car audio systems, speakers, and other audio accessories. Additionally, it uses a Linear gain regulation technique (LGR) to detect input signal levels and adjust output signals, and a distortion-compensating circuitry to reduce distortion levels. All in all, the AN5278 is a great choice for users who require high-end audio sound quality.

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