MAX9776ETJ+T

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The MAX9776ETJ+T is a current-mode Class AB linear audio amplifier. It is used in a variety of applications such as car audio, home theatre systems and portable audio. It offers an integrated circuit solution for maximum power efficiency. The MAX9776ETJ+T operates from 2.7 V to 5.5 V and delivers a maximum stereo output power of up to 17 W into an 8 Ω BTL load while operating from a 5.5 V single supply.

The MAX9776ETJ+T utilizes a PWM-modulated current-mode class-AB architecture. This architecture takes advantage of the fact that audio signals can be sampled at the rate of their fundamental frequency. The amplifier is transconductance-stabilized, meaning that it can maintain a relatively constant output power level even when the supply voltage and load resistance are changing. The amplifier also features current limiting and thermal shutdown protection.

The MAX9776ETJ+T is composed of two parts: an input module, which is responsible for processing the incoming signal, and a power output stage, which is responsible for driving the speaker. The input module consists of three very low-noise differential amplifiers, each of which is tailored to handle input signals of different levels. The differential outputs are then processed by a low-pass filter and a volume control. The filtered signal is then passed to the power output module, which contains two power stages. Each power stage is composed of two high-speed power MOSFETs connected in a class-AB amplifier circuit. The two output stages are then combined by a single output driver to produce an amplified version of the incoming signal.

The MAX9776ETJ+T is an ideal choice for driving high-impedance speakers. It is designed to be highly efficient, dissipating less than one watt of power at full output. It also features low distortion, allowing for a very clean and accurate sound. In addition, the amplifier can be configured for either single-ended or bridged output.

The MAX9776ETJ+T is a versatile audio amplifier that offers an efficient, low-cost solution for driving low-impedance and high-impedance speakers. Its integrated design and current-mode architecture provide maximum efficiency, low distortion, and excellent sound quality. The amplifier is ideal for use in automotive audio systems, home theater systems, and portable audio products.

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