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Linear - Amplifiers - Audio

Audio amplification is important for a number of applications like home theaters, computers, car audio systems and video game systems. The MAX9708ETN/V+TD is a part of digital audio amplifiers which are becoming increasingly popular because of their high efficiency, low distortion, and small size. This amplifier is designed to produce audio signals at a range of 8 Vpp peak-to-peak, or 4 Vrms.

Features

The MAX9708ETN/V+TD is a high-efficiency, dual mode audio amplifier with a low distortion and wide range of operating frequencies. The amplifier operates over a range of 10 ~ 60kHz, with a boost of up to 86dB, and includes short circuit and over-temperature protection. Over-current protection is also included and can be set to protect the amplifier from current surges. The amplifier is also capable of powering stereo speakers with efficiency up to 85%.

Typical Application

The typical application for the MAX9708ETN/V+TD audio amplifier is for use in personal audio devices, such as mobile phones and portable devices. The amplifier is also used in home theater systems and car audio systems. The amplifier can also be used for connecting other types of audio devices like MP3 players, computers and more.

Operating Principle

The MAX9708ETN/V+TD audio amplifier operates using a patented digital-analog hybrid technique that results in higher power efficiency and lower distortion. The circuit consists of two separate sides, one analog and one digital. Both sides are connected to each other and to the input signal. The analog side consists of an amplifier that amplifies the input signal and sends the amplified audio signal to the digital side. The digital side consists of an analog-to-digital converter (ADC) or digital signal processor (DSP) that filters the signal to remove any noise or distortion, if present. The filtered signal is then sent to the amplifier output, where it is amplified to the desired level.

Conclusion

The MAX9708ETN/V+TD is a powerful and efficient audio amplifier for small audio devices. It operates using a high-efficiency digital-analog hybrid technique and offers high power efficiency, low distortion, and wide-frequency range to get the best sound from the speaker. The amplifier can operate over a range of 10-60KHz, with a boost up to 86dB, and features over-current, temperature and short-circuit protection for added safety. Due to its small size, the amplifier can be used for a wide range of applications, from mobile phones and portable devices to home audio systems.

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