MAX4274BKEUA+

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MAX4274BKEUA+ is an Audio Operational Amplifier (Audio Op Amp) that features high-performance linearity and the lowest-noise specification of its class. With an input-referred noise level of 2.1nV/sHz, the MAX4274BKEUA+ offers low distortion and low noise for audio and video applications.

This Audio Op Amp specifically targets high-end audio/video equipment as well as professional and consumer applications where superior performance is required. It can drive a wide range of loads from 12Ω to 120kΩ, meaning it can be used in a variety of applications, from amplifiers and filters to low frequency active circuits. The MAX4274BKEUA+ also features high slew rate (13V/μs), low bias current (1nA) and low power consumption (7.3mA), making it an ideal fit for audio applications such as microphone pre-amps, line amplifiers, equalizers, and instrument amplifiers.

The MAX4274BKEUA+ falls into the Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps category as it is designed to allow users to design their own circuits while benefitting from superior noise performance, low distortion, and high slew rate. Its performance and feature set make the MAX4274BKEUA+ ideal for any application that requires a high level of audio performance, from professional audio to consumer electronics.

Working Principle

The MAX4274BKEUA+ audio Op Amp is a fully differential input-output amplifier, which means it uses both the positive and negative sides of an audio signal for greater linearity and less distortion. This also allows for differential outputs, which are more robust and less susceptible to noise pickup. The MAX4274BKEUA+ also uses a composite feedback loop topology which combines the headroom and linearity of an open-loop amplifier with the stability and low distortion of a closed-loop amplifier.

In addition to the composite loop, the MAX4274BKEUA+ features an internal high-frequency second-pole compensation network. This network ensures that the amplifier remains stable even when driving high-capacitance loads, making it ideal for a wide range of applications. The combination of differential input/output, composite feedback and second-pole compensation all contribute to the low noise, low distortion and high slew rate of the MAX4274BKEUA+.

The MAX4274BKEUA+ audio Op Amp also offers an integrated 1.2V voltage reference. This voltage reference allows for more accurate, repeatable performance from an otherwise low-cost device. The voltage reference is also used to calibrate the amplifier\'s gain, ensuring accurate, noise-free operation.

Application Field

The MAX4274BKEUA+ is an ideal choice for any audio or video application that needs a high-performance Op Amp with low noise, low distortion and high slew rate. Applications include microphone pre-amps, line amplifiers, equalizers, and instrument amplifiers. It is also widely used in professional and consumer applications such as audio mixing consoles, noisy stage tops and sound reinforcement systems. Its high performance and low noise are perfect for any situation where superior audio is needed.

In addition to audio and video applications, the MAX4274BKEUA+ can be used in filtering, low frequency active circuits and motor control circuits. Its low noise characteristics make it well-suited to any situation where a low noise amplifier is needed.

Conclusion

The MAX4274BKEUA+ Audio Op Amp is a low noise, low distortion, high slew rate Operational Amplifier designed for high-end audio/video applications. Its composite feedback loop, differential input and output, and second-pole compensation network ensure superior performance and low power consumption. This Audio Op Amp is an ideal choice for applications such as microphone pre-amps, line amplifiers, equalizers, and instrument amplifiers.

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