What is OP Amp?
Op amp is short for an operational amplifier. It is a type of electronic circuit that amplifies a weak input signal. It can be used to amplify or attenuate signals and is the building block of many other circuits such as operational amplifiers, voltage regulators, and transistors. Therefore, it has a very high op amp gain.
But what is an op amp gain? The gain of an op amp signifies how much greater in magnitude the output voltage will be than the input. For instance, one op amp with a 20KΩ RIN resistor, the other with a 100KΩ RF resistor. It will have a gain of six. It means that the output will be six times the input voltage.
It consists of two input terminals, an inverting terminal, and a non-inverting terminal. The output is connected to the inverting terminal via an output resistor. A positive voltage applied to the input will result in a negative voltage at the output; conversely, a negative voltage applied at the input will result in a positive voltage at the output.
An operational amplifiers ic is a very high gain DC differential amplifier that uses one or more external feedback networks to control its response and characteristics. An ideal op amp is equipped with special characteristics. It contains zero output resistance ROUT, infinite open-loop gain AO, infinite input resistance RIN, and as well as infinite bandwidth.
There is a mass of operational amplifier ic’s suitable for a wide range of applications from standard bipolar, precision, high-speed, low-noise, high-voltage. In integrated circuit packages, the types of operational amps available include single, double, or quad. The most commonly used of all operational amplifiers in today's electronic kits is the industry standard μA741. The RC4558D op amp is electrically similar to the µA741 operational amplifier.
μA-741 operational amplifier
For more relevant information is here:
RC4558D OP Amp: What You Need to Know
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