NJM2122D#

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NJM2122D

The NJM2122D is a general-purpose, single-channel, dual-operational amplifier designed for audio-related applications. It is designed for low voltage operation and good power dissipation capability. This amplifier is ideal for audio applications, such as controlling the level of audio from the source to the speaker, and controlling the overall intensity of the audio.

Application field and working principle

NJM2122D is suitable for various types of linear applications such as amplifiers and instrumentation, OP/Buffer amplifiers, audio preamplifiers, power amplifiers and many other audio-related applications. The NJM2122D features a low offset voltage, low noise, low distortion, high reliability, small size, wide gain range and fast settling time. The input/output ranges from 0V up to 8V, and the gain range is from 10V/V to 40V/V. The power supply voltage for NJM2122D is 5V, and the current requirement is 5mA.

The design of NJM2122D uses a two-stage architecture allowing for the very high gain and low-noise performance needed in audio applications. First, the two-stage amplifier performs the amplification of the input signal. Then, the feedback loop helps to maintain a constant output voltage when the input voltage is varied, while also contributing to low distortion and low noise. This voltage is then added to the output to achieve very high common-mode rejection ratio. The output is also temperature compensated to ensure a consistent output in varying ambient temperatures.

NJM2122D is also equipped with a wide variety of safety features to ensure reliable operation in various applications. The output stage is protected against short and over-current conditions, and the input stage is protected against reverse voltage, so that there is no chance of any adverse effect from the amplifier on the audio source.

Overall, NJM2122D is a very reliable and powerful amplifier for audio applications. It offers good power dissipation and low offset voltage, making it an ideal choice for various types of linear applications. The wide gain range and fast settling time also make it well-suited for various audio-related applications.

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