LME49871MA/NOPB

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LME49871MA/NOPB Application Field and Working Principle

LME49871MA/NOPB is a high-performance and high-efficiency audio amplifier designed for use in a variety of audio applications. It is part of the Linear-Amplifiers-Instrumentation and is also a high-performance and high-efficiency op amp buffer. It is dedicated to providing excellent audio amplification performance with low harmonic distortion, low noise, and high output power.

Features

LME49871MA/NOPB provides excellent sound quality thanks to its high-performance design. It eliminates the need for an external heatsink and uses a Class AB architecture to reduce power dissipation. It offers an adjustable gain control with a range of 11-60dB, short-circuit protection, and an asynchronous shut-down mode. It operates on a 5VDC to 36VDC power supply. Its common-mode voltage range is -3V to +3V and it operates at a power-down current of only 6μA. It has an excellent SNR and THD+N of >113dB and -91dB, respectively.

Applications

LME49871MA/NOPB is ideal for applications in home audio systems, professional audio systems, PA systems, and car audio systems. It is designed for use in high-performance audio systems for volumes ranging from low to high. It is suitable for use in battery-powered systems and systems with limited power supplies. It is particularly suitable for use in radio systems and vehicle audio systems since it offers a low noise floor and distortion-free sound. It is also an excellent choice for guitar amplifiers.

Working Principle

LME49871MA/NOPB utilizes a single-ended Class AB output stage to provide configurable gain range coverage from 11-60dB. The amplifier is designed to be linear over the full frequency range, including high-frequency components. The device also features configurable gain selection, thermal protection, and distortion cancellation. The output stage is powered by a 5VDC to 36VDC power supply. The overall design is thermally efficient and can eliminate the need for external heatsinks.

At the input stage, LME49871MA/NOPB includes configurable gain range selection and distortion cancellation. The low noise and distortion levels at the input stage provide an excellent signal-to-noise ratio and eliminate unwanted noise. The single-ended output stage provides an amplified signal with a wide range of adjustment settings. The adjustable gain control can be used to adjust the levels of the input signal to match the output needs.

The device utilizes a Class AB output stage with thermal protection to ensure stability and long-term reliability. The output stage features a configurable gain range from 11-60 dB and provides the flexibility to use high and low gain settings. The output stage is designed to be thermally efficient and eliminates the need for external heatsinks. The overall performance of the amplifier is improved thanks to its high-performance design.

In sum, LME49871MA/NOPB is a versatile and reliable audio amplifier that can be used in a range of audio applications. It offers high-quality sound, low noise, and high output power. It eliminates the need for an external heatsink and provides excellent linearity over the frequency range. Its adjustable gain control and short-circuit protection provide excellent stability and overall performance. It can be used in a wide range of audio applications, such as home audio, professional audio, PA systems, radio systems, and car audio systems.

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