Category: 9. Operational Amplifier

The Op-amp Multivibrator is a non-inverting op-amp circuit that produces its own input signal with the aid of an RC feedback network. The Operational Amplifier or Op-amp for short, is a very versatile device that can be used in a variety of different electronic circuits and applications, from voltage amplifiers, to filters, to signal conditioners. But one very simple…

Operational Amplifiers are used to amplify signals from DC to tens of megahertz and can do so in a variety of different op-amp configurations. We have seen that we can connect resistors to a basic operational amplifier to produce various inverting and non-inverting outputs and configurations along with their respective gains. So to make things…

Operational Amplifiers summary sheet defining the basic characteristics of the various operational amplifier configurations. We can conclude our section and look at the Operational Amplifier with the following summary of the different types of Op-amp circuits and their different configurations discussed throughout this op-amp tutorial section. Operational Amplifier General Conditions The Two Basic Op-amp Circuits Operational Amplifier…

The basic operational amplifier differentiator circuit produces an output signal which is the first derivative of the input signal. In the differentiator amplifier circuit, the position of the capacitor and resistor have been reversed and now the reactance, XC is connected to the input terminal of the inverting amplifier while the resistor, Rƒ forms the negative feedback element across…

The integrator Op-amp produces an output voltage that is both proportional to the amplitude and duration of the input signal. The ideal op-amp integrator is an inverting amplifier whose output voltage is proportional to the negative integral of the input voltage thereby simulating mathematical integration. Operational amplifiers can be used as part of a positive…

The differential amplifier amplifies the voltage difference present on its inverting and non-inverting inputs. The differential amplifier is a voltage subtractor circuit which produces an output voltage proportional to the voltage difference of two input signals applied to the inputs of the inverting and non-inverting terminals of an operational amplifier. Thus far we have used…

The Summing Amplifier is another type of operational amplifier circuit configuration that is used to combine the voltages present on two or more inputs into a single output voltage. We saw previously in the inverting operational amplifier that the inverting amplifier has a single input voltage, (Vin) applied to the inverting input terminal. If we add more…

The second basic configuration of an operational amplifier circuit is that of a Non-inverting Operational Amplifier design. In non-inverting operational amplifier configuration, the input voltage signal, ( VIN ) is applied directly to the non-inverting ( + ) input terminal which means that the output gain of the amplifier becomes “Positive” in value in contrast to the “Inverting Amplifier” circuit we…

The Inverting Operational Amplifier configuration is one of the simplest and most commonly used op-amp topologies. The inverting operational amplifier is basically a constant or fixed-gain amplifier producing a negative output voltage as its gain is always negative. We saw in the last tutorial that the Open Loop Gain, ( AVO ) of an operational amplifier can be…

Operational Amplifiers, or Op-amps as they are more commonly called, are one of the basic building blocks of Analogue Electronic Circuits. In this operational amplifier basics tutorial, we will see that Operational amplifiers are linear devices which have all the properties required for nearly ideal DC amplification. They are used extensively in signal conditioning, filtering or to perform mathematical…