AN7580

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Audio amplifiers are electronic devices that amplify audio signals, typically with a larger choice of gain and power than most conventional power amplifiers. The AN7580 is a type of audio amplifier that is widely used in consumer electronic applications. It can be used as a line amplifier, a headphone driver, and a general purpose amplifier. This article will discuss the application field and working principle of the AN7580.

The AN7580 is a wide-bandwidth audio amplifier with low distortion, low noise, and low power consumption. It can operate from a single rail supply of 9V to 12V and delivers up to 8 watts of power with a 2-Ohm load. It is ideal for audio power amplifier applications, such as home and car stereo systems, portable music players, or headphones. It is also used in TV and DVD player systems, equalizers, and other audio systems.

The AN7580 consists of two symmetric NPN transistors configured as a darlington circuit. The input signal is applied to the non-inverting input, while the reference voltage is applied to the inverting input. This configuration is known as a non-inverting amplifier. The amplifier produces an output voltage that is proportional to the difference between the input voltage and the reference voltage. This ensures that the output is always greater than the input, resulting in a gain of at least one.

The gain of the amplifier can be controlled using the gain control pins. The current drawn by the transistors is also proportional to the gain. When the current is set too high, the transistors may enter into thermal runaway, resulting in excessive distortion. To prevent this from happening, the gain control pins are used to set the current level and ensure that the amplifier does not enter into thermal runaway.

The AN7580 also features a low noise level, making it ideal for applications where low noise is important. Its low-noise performance is due to its low-distortion design, which reduces the amount of noise generated by the amplifier. The low-noise performance also makes the amplifier suitable for use in audio systems with sensitive components, such as microphones and headphones.

The AN7580 also features low power consumption, making it ideal for battery-powered applications. Its low power consumption also makes it a good choice for applications where energy efficiency is a priority. The low power consumption combined with its low distortion characteristics make the AN7580 a great choice for audio systems.

In summary, the AN7580 is an audio amplifier that is widely used in consumer electronic applications. It can deliver up to 8 watts of power and features a low distortion design, low noise performance, and low power consumption. The AN7580 is an ideal choice for audio applications where low distortion, low noise, and low power consumption are required. It can be used as a line amplifier, headphone driver, and general purpose amplifier, making it a versatile device for a variety of applications.

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