Op-amp Circuits projects

Op-amp Circuits projects

An operational amplifier (often op-amp or opamp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output.[1] In this configuration, an op-amp produces an output potential (relative to circuit ground) that is typically hundreds of thousands of times larger than the potential difference between its input terminals. Operational amplifiers had their origins in analog computers, where they were used to perform mathematical operations in many linear, non-linear, and frequency-dependent circuits.

The popularity of the op-amp as a building block in analog circuits is due to its versatility. By using negative feedback, the characteristics of an op-amp circuit, its gain, input and output impedance, bandwidth etc. are determined by external components and have little dependence on temperature coefficients or manufacturing variations in the op-amp itself.

Op-amps are among the most widely used electronic devices today, being used in a vast array of consumer, industrial, and scientific devices. Many standard IC op-amps cost only a few cents in moderate production volume; however, some integrated or hybrid operational amplifiers with special performance specifications may cost over US$100 in small quantities.[2] Op-amps may be packaged as components or used as elements of more complex integrated circuits.

The op-amp is one type of differential amplifier. Other types of differential amplifier include the fully differential amplifier (similar to the op-amp, but with two outputs), the instrumentation amplifier (usually built from three op-amps), the isolation amplifier (similar to the instrumentation amplifier, but with tolerance to common-mode voltages that would destroy an ordinary op-amp), and negative-feedback amplifier (usually built from one or more op-amps and a resistive feedback network)

运算放大器电路项目

运算放大器（OPAMP经常或运算放大器）是具有差分输入和，通常，一个单端输出一个直流耦合的高增益电子电压放大器。[1]在该配置中，运算放大器产生一个输出电势（相对于电路接地），其典型地是几十万的比它的输入端之间的电位差更大倍。运算放大器具有它们的起源在模拟计算机，在那里他们被用来在许多线性的，非线性的，并且依赖于频率的电路执行数学运算。

运算放大器作为模拟电路的构建块的普及是由于其通用性。通过使用负反馈，运算放大器电路，它的增益，输入和输出阻抗的特性，带宽等等是由外部元件确定，并且具有在所述运算放大器本身的温度系数或制造变化的依赖性很小。

运算放大器是最广泛使用的电子设备间的今天，消费，工业，科学设备繁多被使用。许多标准IC运算放大器成本适中的产量只有几毛钱;然而，具有特殊性能规格一些集成或混合运算放大器可能花费超过US少量$ 100 [2]运算放大器可封装为部件或用作更复杂的集成电路元件。

运算放大器是一种类型的差分放大器。其它类型的差分放大器的包括全差动放大器（类似于运算放大器，但具有两个输出），仪表放大器（通常来自三个运算放大器内置），隔离放大器（类似仪表放大器，但与公差至会破坏一个普通的运算放大器的共模电压），和负反馈放大器（通常从一个或多个运算放大器和一个电阻反馈网络构建）