LM4752T/NOPB

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LM4752T/NOPB Application Field and Working Principle

LM4752T/NOPB is an audio amplifier device manufactured by Texas Instruments. It is a monolithic integrated circuit designed to provide two-channel high-performance audio amplification for consumer electronic products. It is capable of driving up to 2W output power into 6 ohm load at 8V supplies. The IC offers a comprehensive set of features including input flagging and output current limiting, which makes it ideal for use in consumer audio applications.

The LM4752T/NOPB is a two-channel audio amplifier built around a proprietary Texas Instruments device designed to help designers implement high-performance audio amplifiers with ease. It features two separate input and output stages as well as integrated protection features such as flagging, output current limiting and thermal shutdown. The device targets applications like high-end audio amplifiers, car stereos, integrated amplifiers, and soundbars.

The core of the chip is a differential amplifier. Its two inputs are matched to minimise differences between left and right channels, and it has dual mode Class-A or Class-AB output stages to deliver up to 2W of output power into 6ohm speakers at 8V power supply. It comes with several input flagging systems that can detect and provide protection from incorrect connections. These inputs also feature overvoltage protection and a common-mode rejection ratio that is much higher than conventional audio amplifiers.

The LM4752T/NOPB also comes with a thermal shutdown system, which limits the temperature of the device by reducing the gain. An output current limiting system helps prevent possible overloads that could damage the device and associated speakers. The LM4752T/NOPB has a self-biased output, which allows it to work without the need for an external power supply.

The LM4752T/NOPB is an ideal choice for designers who need an audio amplifier with high performance, low distortion and low noise. Its anti-thump circuitry ensures smooth start-up and shutdown of the amplifier, and its high common-mode rejection ratio helps reduce interference from the power supply or other signals that might be present in the system. It is a cost-effective solution for audio enthusiasts who want great sound reproduction in their home or car audio systems.

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