MAX9790AETJ+

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MAX9790AETJ+ Application Field and Working Principle

The MAX9790AETJ+ is a family of highly efficient and accurate low-noise linear amplifiers for audio applications, such as sound cards, tablets, and cell phones. These amplifiers feature an operation that offers very low noise, high gain, and fast shutdown with minimal supply current. The MAX9790AETJ+ also has an excellent slew rate, high gain accuracy, and wide common-mode range.

Features of the MAX9790AETJ+

• Low-noise performance means that background noise, such as electrical and thermal noise, is reduced to a minimum, providing an excellent listening experience.
• High gain provides a clear and dynamic audio output.
• Fast shutdown ensures that current drain is minimized in standby mode.
• High gain accuracy ensures that output signals are reproduced accurately, without distortion.
• Wide common-mode range allows higher signal-to-noise ratios by reducing interaction between the various stages.

Applications for the MAX9790AETJ+

The MAX9790AETJ+ is suitable for a variety of audio applications, including portable media players, headphones, and sound cards. In addition, the MAX9790AETJ+ has been designed to be a drop-in replacement for many existing amplifier solutions, allowing designers to quickly and easily update their designs and take advantage of the new features. This is especially important for applications that require very low noise, high gain, and fast configuration times.

Working Principle of the MAX9790AETJ+

The MAX9790AETJ+ is an efficient, high-fidelity, low-noise linear amplifier for audio applications. It works by amplifying the input signal from a source such as a microphone or preamplifier to a final, larger output without adding significant distortion or background noise. The MAX9790AETJ+ uses a combination of transistors, resistors, and capacitors to provide a gain of up to 50dB and a low-noise output of -85dBu. This amplifier is also capable of fast shutdown, with a standby current of less than 1µA.

The MAX9790AETJ+ utilizes a differential input to reduce noise and increase common-mode performance. This allows the amplifier to achieve high signal-to-noise ratios, even in applications where the common mode voltage is variable. To further reduce electrical and thermal noise, the MAX9790AETJ+ has an internal ESD protection circuit, which protects the amplifier from unwanted electrical surges.

The MAX9790AETJ+ also utilizes a low-impedance output stage, which is designed to reduce distortion and provide improved power efficiency. By utilizing a low-impedance output, the amplifier can draw less current and reduce power waste, resulting in higher output power than traditional audio amplifiers.

The MAX9790AETJ+ is an efficient, high-fidelity, low-noise amplifier for professional audio applications. It combines low-noise performance with high gain and fast shutdown to provide clear, noise-free sound and extended dynamic range. The amplifier is also capable of high gain accuracy and wide common-mode range, allowing the designer to achieve excellent signal-to-noise ratios for their audio products.

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