LM258N

LM258N Application Field and Working Principle

The LM258N is a high-performance operational amplifier (op-amp) with a wide range of applications. It belongs to the instrumentation, op-amps, buffer amps linear amplifier family, providing excellent value for money.

Features

The LM258N has a number of features, including a fast response time, low voltage noise, low input offset voltage and high common mode input voltage. It has a low quiescent current, allowing it to operate with a wide range of power supply voltages. It also has high common-mode rejection, keeping the output signal stable in all conditions.

Applications

The LM258N is suitable for a wide range of applications. It is commonly used in process control, data acquisition, data processing and optical systems, as well as in amplifiers and signal conditioning circuits. Its fast response time and low voltage noise makes it well-suited for video applications such as video amplifiers, video line amplifiers and video signal pre-processing. The LM258N is also used in instrumentation amplifiers, such as medical and audio-frequency applications.

Working Principle

The LM258N is an operational amplifier, which consists of two transistor amplifiers which produce an amplified output signal. It is powered by a single power supply, so when a signal is applied to the input terminal, half of the signal enters one amplifier and the other half enters the other amplifier. The amplifiers then amplify the signal and create an output voltage that is the sum of the input signal plus some offset voltage. This offset voltage is then removed by a summing amplifier, which creates a single output signal. The output voltage is then ready to be used in the application.

Conclusion

The LM258N operational amplifier is an excellent value for money device, suitable for a range of applications. Its fast response time, low quiescent current, low voltage noise and high common mode input voltage make it suitable for many applications. The working principle of the LM258N is based on two transconductance amplifiers, which produce an output voltage that is the sum of the input signal plus some offset voltage. This offset voltage is then removed by a summing amplifier, resulting in a single output signal.