MAX9702ETI+

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The MAX9702ETI+ is a high-performance fully differential, low-distortion audio amplifier designed for demanding professional audio applications. With a high slew rate (1,400V/μs), low distortion (0.006%), and an adjustable gain (1.9V/V to 4.2V/V) it supports audio signals with a frequency range of up to 50kHz. This makes the MAX9702ETI+ the perfect choice for pro audio applications that require wide dynamic range and low distortion from low-level input signals to high-level outputs.

The MAX9702ETI+ features an internal bootstrap amplifier to reduce output swing noise and minimize distortion. In addition, the device uses a flexible architecture that requires no external components to adjust the gain, making it ideal for audio systems where space is a premium. The device also provides a soft-start to minimize start-up current and an Under-Voltage Lockout mode to protect the output in the event of a supply voltage drop.

The MAX9702ETI+ is ideal for applications such as mixers, microphone preamps, headphone amplifiers, and multichannel audio systems. With its wide range of features and low-distortion performance, the MAX9702ETI+ is a great solution for any audio application.

The working principle of the MAX9702ETI+ audio amplifier is fairly straightforward. The device consists of two differential amplifier stages, an output driver, and DC offset compensation circuitry. The differential input stages accept an audio signal and amplify it with a gain that is determined by the voltage applied to the gain adjust pin. The output stage then further amplifies and drives the signal, while the offset compensation circuitry monitors the output and adjusts the gain at the input nodes to minimize the offset voltage at the output.

In operation, the MAX9702ETI+ amplifies an audio signal to an output voltage, according to the input signal and the gain adjustment applied to the gain control pin. This output voltage is converted to a current by the output driver, and then passed on to the load. The output stage can be operated in class-A, class-AB, or class-B modes, depending on the output load and the amount of power needed from the amplifier.

In summary, the MAX9702ETI+ is a high-performance, low-distortion audio amplifier designed for a wide range of audio applications. The device features a wide range of features, including an adjustable gain and soft-start, and is capable of delivering a wide range of output levels with low distortion. The working principle of the MAX9702ETI+ is based on two differential amplifier stages, an output driver, and DC offset compensation circuitry. This makes it the perfect choice for applications that require excellent audio performance with minimal space requirements.

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