LM4671ITL/NOPB

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LM4671ITL/NOPB Application Field and Working Principle

The LM4671ITL/NOPB is an audio amplifier used in linear applications. It is capable of driving up to 300mA of current with low distortion. The device boasts a small size to allow easy integration in consumer electronics applications. It also has an integrated thermal limit circuit, which helps protect it from overheating.

Features

The LM4671ITL/NOPB has several features that make it an attractive choice for audio amplification. It is rated for both single and dual channel operation, and can provide up to 25W per channel of output power. It also has a wide frequency range of 20Hz to 20kHz, and a low noise floor of -90dBm. In addition, it features a high common mode rejection ratio (CMRR) of 85dB, which helps reduce noise and distortion in the audio signal.

The LM4671ITL/NOPB also features low power output limiting. This helps ensure that the device does not damage itself when driven beyond its limits. Additionally, it has an integrated short-circuit protection circuit, which protects the amplifier from short circuits and other overloads. Lastly, the device is designed to operate with a wide supply voltage range from 3V to 18V.

Applications

The LM4671ITL/NOPB is well suited for a wide range of audio amplification applications. It can be used for car audio systems, home theater systems, sound bars, DJ equipment, and more. Additionally, it can be used in computer audio applications such as sound cards, headphone amplifiers, and WiFi speakers. It can also be used in industrial and medical applications such as endoscopes and ultrasound equipment.

Working Principle

The LM4671ITL/NOPB is a linear amplifier, which means it works by amplifying the input signal without introducing any non-linearities. The device consists of two components – an input section and a loudspeaker section. The input section consists of filters, variably gain stages, and other components to condition the incoming signal. The loudspeaker section consists of an output stage, a power transistor, and a protection circuit. The output stage amplifies the signal and passes it to the loudspeaker. The power transistor boosts the voltage, allowing it to drive the loudspeaker efficiently. The protection circuit senses an overload or short circuit condition and shuts off the power, preventing any damage to the device.

Conclusion

The LM4671ITL/NOPB is an audio amplifier suitable for a wide range of linear applications. Its features include a wide frequency range, low noise floor, and high CMRR, and it also features low power output limiting and short-circuit protection. It can be used in car audio systems, home theater systems, sound bars, computer audio applications, industrial applications, and medical applications. The device works by amplifying the input signal without introducing non-linearities, and it is capable of driving up to 300mA of current with low distortion.

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