NJU7004M# Application Field and Working Principle

Linear Amplifiers – Instrumentation, OP Amps, Buffer Amps

The NJU7004M# is a low noise, low power linear amplifier from New Japan Radio Co. Ltd. that belongs to the Instrumentation, OP Amps, Buffer Amps family. It is primarily used for signal processing in various industrial, medical and consumer applications, such as biometric and automotive systems.

The NJU7004M#is a dual operational amplifier/buffer IC, which contains two N-Channel MOSFET devices. It features a wide bandwidth, low noise performance and low distortion. It also provides a wide range of values for amplification factors, ranging from ten to twenty-nine times the current of the input, depending on the application. The maximum power consumption of the NJU7004M# is 1.2 mW, making it suitable for battery-powered systems or applications in which power conservation is important.

The working principle of the NJU7004M# is based on a differential amplifier circuit. The differential amplifier consists of two sets of complementary N-channel MOSFETs arranged in a “push-pull” arrangement. The input signals are then fed into the differential amplifier and amplified. The output voltage is proportional to the difference between the input voltages, thus providing gain. The output is then a linear representation of the input signal.

The NJU7004M# can also be used as an operational amplifier, by connecting the two inputs of the IC and using the output as an output voltage. This is known as an “open-loop” configuration. In this case, the user can adjust the gain by changing the resistance of the feedback loops connected to the input terminals of the IC. This allows for finer control and flexibility in the application.

The NJU7004M# also offers excellent immunity to noise and interference, making it suitable for use in critical applications. The input stage also provides protection against over-voltage and reverse connection. Furthermore, the IC offers a wide range of output voltage, meaning that it can be used in a variety of applications.

In conclusion, the NJU7004M# is an extremely versatile linear amplifier that is well suited to a range of instrumentation, OP Hop, Buffer Amp applications. Its low power requirements and wide bandwidth make it ideal for battery powered instruments and critical applications. Furthermore, its immunity to noise and interference, along with its range of adjustable amplification factors make it an excellent solution for a variety of signal processing applications.