LM386N-3

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The LM386N-3 is an audio-frequency power amplifier, designed for a wide variety of applications including intercom, home entertainment, public address, and audio testing. The device is designed to accept a wide range of input levels, and features adjustable gain, selectable frequency response, and low noise operation. This versatility makes the LM386N-3 a great choice for a wide variety of audio applications.

Application Field

The LM386N-3 is designed for a variety of audio applications, including intercoms, home entertainment, public address, and audio testing. It is suitable for general purposes audio applications that require low power operation from a small form factor. The low noise operation and adjustable gain make the LM386N-3 suitable for use in applications such as audio amplifiers, line drivers, headphone amplifiers, portable radios, intercom systems, and sound reinforcement systems.

Working Principle

The LM386N-3 is an audio power amplifier designed to operate from a wide range of input levels and with low noise operation. The device is designed with adjustable gain, selectable frequency response, and service input and output levels. The LM386N-3 is designed to amplify signals in both directions and features on-board Class AB output transistors.

The LM386N-3 uses a voltage divider to provide adjustable gain control. The voltage divider allows the user to set the gain level to the desired output level. The device also features an on-board frequency response limiter, a service input level control, and an output level control. The limiter allows the user to set the frequency response of the amplifier to the desired level for the particular application.

The LM386N-3 also features an input buffer and a power output stage. The input buffer amplifies low-level signals from the input source and adjusts the level to suit the LM386N-3’s gain. The power output stage provides Class AB amplification of the input signal, providing a full power output.

The LM386N-3 is designed for low voltage operation, and can be powered from a 9V battery or a 6V DC power supply. The device is also designed for high temperature operation, and can handle up to 65°C without any degradation in performance.

Overall, the LM386N-3 is a great choice for a variety of audio applications. Its adjustable gain, selectable frequency response, and low noise operation make it ideal for many general purposes audio applications. It is designed for low voltage and high temperature operation, making it suitable for use in many portable and industrial applications.

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