The NJM3404AM - TE1 is a dual - channel operational amplifier 157. Its main functions and application scenarios are as follows:
Signal Amplification:
o In various sensor circuits, the weak electrical signals output by sensors often need to be amplified before they can be accurately processed by subsequent circuits. For example, the signals output by temperature sensors, pressure sensors, etc. can be amplified by the NJM3404AM - TE1, so that the signal strength can meet the system's requirements for signal processing.
o In audio equipment, it can be used for pre - amplification of audio signals. For example, in the input stage of a sound system, the audio signals input from microphones, audio players, etc. are amplified to increase the volume and quality of the audio, providing suitable signals for subsequent power amplification and other processes.
Signal Conditioning:
o Signal filtering, noise reduction and other processing are carried out. A filtering circuit can be formed by connecting external resistors, capacitors and other components with the NJM3404AM - TE1 to remove noise and interference components in the signal and make the signal purer. For example, in a communication system, the received signal is filtered to improve the signal - to - noise ratio.
o Voltage adjustment of the signal is performed. The voltage range of the input signal can be adjusted to a range suitable for processing by subsequent circuits to ensure that the signal can be correctly processed and transmitted.
Signal Comparison:
It can be used as a comparator to compare the magnitudes of two input signals and output the corresponding logic level. For example, in an automatic control system, it is used to compare the sensor feedback signal with the set value, and control the action of the actuator according to the comparison result to achieve automatic control of the system.
Buffer Drive:
It plays the roles of buffering and driving in the circuit. It can enhance the driving ability of the signal and drive some loads that require larger current or power, such as driving LED displays, relays, etc. At the same time, it can also isolate the front - stage and rear - stage circuits to reduce mutual interference.
