NJM2521M

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NJM2521M is a high linearity muted amplifier IC with a signal-to-noise ratio over 100dB. Designed by NJR (New Japan Radio Co., Ltd), it is suitable for a variety of audio special purpose applications. This article will explain its application fields and working principles.

Application Fields of NJM2521M

The NJM2521M is a surface mount amplifier IC that is used in many audio special purpose applications. It can be used in headphones, portable speakers, digital audio amplifiers and other audio related equipment. It is ideal for applications that require a clean and highly linear sound output. It has three different modes of operation which can be used for different scenarios. The NJM2521M is particularly suited for headphone amplifier applications. It is designed to minimise the distortion of the incoming audio signal and ensure the highest level of fidelity and sound quality. It also has a mute function which can be activated to provide more control over the headphone amplifier. The mute feature can be used to switch off the output of the amplifier when no sound is needed.

Working Principle of NJM2521M

The NJM2521M has a special operating principle which enables it to achieve high audio output quality. It is able to provide an extremely linear sound output by using low noise technology and an optimised audio path. This ensures that the sound output maintains its fidelity. The NJM2521M uses a two-stage amplifier circuit which is optimised for low noise performance. The first stage is a single stage, high gain amplifier and the second stage is a dual stage, high linearity amplifier. The two stages are designed to work together to provide a high SNR (signal-to-noise ratio).The NJM2521M uses an asynchronous mute function which can be activated to switch off the output of the amplifier. This allows the user to have more control over the audio output. The mute feature is activated by an external control pin.

Conclusion

The NJM2521M is a highly linear amplifier IC which is ideal for audio special purpose applications. It has a high SNR and low noise technology which makes it suitable for different audio applications. It has a mute function which makes it easier to control the output of the amplifier. This makes it ideal for applications such as headphones and portable speakers.

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