LM4880N

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LM4880N is a power amplifier IC designed specifically for the audio signal amplification field. It is a dual-channel, low-power amplifier with a signal-to-noise ratio of 78dB and a power output of 4W/channel into 8Ωload. With its low power requirement and wide operating voltage range, it is suitable for use in a variety of devices including MP3 players, portable speaker systems and other audio and multimedia systems.

The LM4880N is composed of two power amplifier stages, each with an identical signal path. The first stage amplifies the signal from the input to a predetermined level, which is determined by the ratio of the operational amplifier\'s gain. The second stage is a differential amplifier, which raises the signal level to the desired output level. This second stage is capable of driving a low impedance load with a low distortion value.

In addition to the two amplifier stages, the LM4880N also incorporates a variety of other features, such as level shift and band-limit functions, as well as a low power shutdown mode. The level shift function allows the output voltage to be adjusted without affecting the amplifier\'s gain or performance. The band limit function helps reduce the amount of high frequency noise that can be introduced into the signal. In addition, the low power shutdown mode helps conserve power when the device is not in use.

In general, the LM4880N is a highly efficient, low-power amplifier IC suitable for use in portable and multimedia audio systems. Its low power requirement and wide operating voltage range make it an ideal choice for a variety of applications. With its two amplifier stages, level shift and band limit functions, as well as a low power shutdown mode, the LM4880N offers a reliable, low-powered solution for audio signal amplification.

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