3581J

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

A 3581J is a classic component of linear amplification circuitry. It features instrumentation-grade performance and is capable of both voltage and current output. This has made 3581J applications integral to numerous linear amplification, instrumentation and automation projects.

Overview

The 3581J is a two-channel, low to medium power operational amplifier. It is highly versatile because of both its performance and its relatively low cost. This makes it an appealing choice for countless general-purpose instrument designs. As such, it has become an industry standard with numerous industry applications.

Features

The 3581J is available in both a voltage and current output versions. It enjoys low noise levels, excellent linearity, and a high common-mode rejection ration due to its differential inputs. It also features a low input bias current, making it particularly suitable for low power circuit applications.

In addition, the 3581J amplifier can be powered over a wide supply voltage range. This makes it suitable for both applications where the power is likely to vary but also those requiring low-power circuitry. The 3581J is also available in a surface-mountable version, allowing it to be fitted onto almost any circuit board.

Uses

The 3581J is used in many different applications in the fields of automation and instrumentation. Its low current input and output stages allow for extremely precise and low-noise signal transfer. This makes the 3581J ideal for signal conditioning and other applications requiring accurate and low noise signal flow.

The 3581J can be used to drive any type of LEDs and even gas discharge lamps. It can be used to drive instruments in a wide variety of applications including audio, RF, optical, and automotive instruments. The 3581J is also an excellent choice for driving instrumentation transducers and control systems.

Finally, the 3581J is widely used in automated manufacturing systems as both an interface between different systems and for controlling actuators. The 3581J makes it easy to interface a wide range of sensors and industrial controllers in automated systems, both for monitoring and for control.

Working Principle

The 3581J is based on the classic inverting amplifier topology. It is typically used in the most linear and accurate range of the voltage-gain curve and provides high-performance operation. The input signals are applied to the inverting input and a negative feedback resistor is connected to its output. The current due to the input signal is amplified by the gain of the amplifier, which is determined by the ratio of the feedback resistor to the input resistance of the amplifier.

The output is then produced by taking a short-circuited output from the inverting input of the amplifier, due to the negative feedback loop. This ensures that small disturbances in the output of the amplifier are always compensated quickly by the feedback loop, ensuring the highest levels of stability and accuracy.

Conclusion

The 3581J is a versatile and inexpensive piece of linear amplification circuitry. Its wide range of applications and its low cost make it a popular choice for a range of instrumentation, automation, control and sensing applications. Its excellent linearity, wide supply range and low noise performance make it a great choice for any precision measurement or monitoring system. Furthermore, the 3581J’s easy to use nature makes it an excellent choice for anyone looking for a reliable and affordable solution for their linear amplification needs.