LM4925MM/NOPB

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Linear amplifiers are used to amplify electrical signals in many applications in industries ranging from audio to radio frequency. The LM4925MM/NOPB is one such amplifier used for audio applications. This application note will discuss the application field and working principle of the LM4925MM/NOPB audio amp.

The LM4925MM/NOPB is designed as an audio amplifier that provides a high-performance solution for audio applications. It is designed to deliver excellent performance with low levels of distortion. The amplifier is designed to deliver a wide range of gain settings, enabling it to provide the desired audio levels across a wide range of applications.

Due to its design, the LM4925MM/NOPB is suitable for use in a variety of audio applications including automotive, home audio and pro audio applications. The amplifier is capable of delivering up to 800mV of peak output power and can output up to 25W RMS of power. It is also capable of delivering a high slew rate of 650V/us, making it suitable for audio applications requiring a wide dynamic range.

The LM4925MM/NOPB is capable of functioning as both a bridge and a single-ended amplifier. It has a wide operating voltage range of 4.5 and 30V and is capable of functioning over a range of temperatures from -40 to +85 °C. The amplifier is also designed to minimize distortion and provide low noise output.

The application field of the LM4925MM/NOPB is extensive and covers a wide range of audio applications, including automotive, home audio and pro audio systems. It is suitable for audio application where a low distortion, high performance and high output power are desired.

The working principle of the LM4925MM/NOPB is based on the use of two transistors in a common base configuration. This configuration allows the amplifier to provide two distinct gain stages, one that behaves as an amplifier of the input signal, and one that acts as an attenuator or scaler of the output signal. The two transistors are biased properly so that their gains remain constant over the operating range, providing consistent results.

The input signal is applied to the base of the first transistor and is amplified. This amplified signal is then fed to the base of the second transistor and is again amplified, though at a lower gain than the first stage. The gain of the second stage is determined by the setting of the output stage. The output of the second transistor is then fed to the output stage of the amplifier where it is amplified further and output as the final audio signal.

The LM4925MM/NOPB is a highly integrated audio amplifier designed to provide excellent performance in a wide range of audio applications. It provides a high-performance solution with low levels of distortion, high slew rate, wide operating voltage range and lower temperature operating range. It is capable of delivering high output power, making it suitable for automotive, home audio and pro audio applications. The use of two transistors in a common base configuration is used to provide two distinct gain stages, enabling the amplifier to provide the correct amount of amplification.

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