MAX98357BEWL+T

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The MAX98357BEWL+T is a Low-Power Mono/Stereo Class D Audio Amplifier with a Low-Noise Analog Input and Class-D Output Stage that is designed for portable products. It is part of the Linear-Amplifier-Audio range of products, and is commonly used across personal audio, wearable health and fitness, industrial, and other applications.

Application Field: The MAX98357BEWL+T is suitable for applications such as wired and wireless headphones, portable audio systems, wireless speakers and wearables. It offers high efficiency, up to 89% AE, at lower supply voltages, making it well-suited for battery-powered systems. It offers excellent THD+N (Total Harmonic Distortion + Noise) performance of less than 0.015%.

Working Principle: The MAX98357BEWL+T operates from a wide voltage range of 1.8V – 5.5V and includes an automatic gain control that adjusts the output power in response to changes in the supply voltage. This ensures high-level performance and consistent output power over the supply voltage range during use. It offers a wide range of input options making it highly flexible for most applications, including single-ended line-in, differential line-in, and microphone inputs.

The device includes two bridge-tied load (BTL) outputs, which ensures maximum efficiency, low power consumption and low EMI noise. It includes two different power-down modes that can be used to save power during idle times or when the system is not in use. It also supports independent volume control over the left and right channels and digital mute control.

The digital audio data is sent to the device via its I2S or TDM formats supporting 2-channel I2S and 4-channel TDM signal formats. The digital audio data is then converted to a high quality signal using the integrated 18bit sigma-delta modulator and output driver, ensuring the signal quality is preserved and is delivered to the speakers without distortion or noise.

In addition, the MAX98357BEWL+T offers shutdown modes, which allows the user to reduce power consumption in low-power applications. It also includes numerous other features such as adjustable gain settings, independent gain settings, short-circuit protection, thermal shutdown, and over-voltage protection.

The MAX98357BEWL+T is a highly advanced Class D audio amplifier with a low-noise analog input and Class-D output stage enabling users to produce high-quality audio with minimal power consumption and noise levels. With its wide range of features and flexibility, it is suitable for a wide variety of applications.

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