NJM2770M

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NJM2770M Application Field and Working Principle

NJM2770M is a high-performance audio voltage power amplifier manufactured by Japan Electronic Industries & Components Corporation (JEIC). It is a linear amplifier specifically designed for audio applications, and is commonly used in audio systems, home theaters, automotive audio systems, and portable audio devices.

Application Field

NJM2770M can be used as an audio voltage amplifier for a variety of audio applications, from acoustic transducers such as headphones and microphones, to larger public address systems. It is suitable for use in both residential and commercial settings. NJM2770M can also be used for industrial and automotive purposes, such as radio amplifiers and home theater systems.

Working Principle

NJM2770M linear amplifiers use a method called differential pair amplifiers to implement their audio power output. These amplifiers use two transistors in combination, with one transistor being the input signal while the other being the output signal. This allows the amplifier to amplify its input signal while keeping the output signal accurate and noise-free. The NJM2770M is capable of outputting up to 2.8A of power with a 16-ohm speaker load.

NJM2770M amplifiers are known for their low total harmonic distortion (THD) and high signal-to-noise ratio (SNR). The amplifier offers a wide range of frequency response, up to 80kHz, and can produce optimal audio signal reproduction. This is achieved through the amplifier\'s low-noise, low-distortion, and low-onset-delays audio topology, which enables it to deliver accurate, detailed sound reproduction.

Features

The NJM2770M has many features that make it an excellent choice for audio applications. It has a low quiescent current of 500µA and a wide dynamic range from 9 to 22kHz. It also offers various input levels, from -10db up to +4dB for line level signals. The amplifier is protected by thermal shutdown protection and has a standby function, making it safe and reliable for long-term use.

The NJM2770M can be used with up to two 8-ohm speakers. It has a maximum output power of 2.8A and a power-supply voltage range of 9-13V. The device also features a switchable gain setting, allowing it to be set from 0dB to 18dB. This feature makes the amplifier more versatile and suitable for a wide range of applications.

The NJM2770M is a reliable and efficient audio power amplifier, suitable for use in a range of audio applications. It offers low total harmonic distortion and noise, as well as accurate sound reproduction with a wide frequency response. It is easy to integrate into existing audio systems, due to its low quiescent current and adjustable gain setting.

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