Op amp block diagram

About this op amp block diagram

Operational amplifier, also known as op-amp, a versatile high–gain monolithic analog signal amplifier. Using high gain, high input impedance, and low output impedance are some of the features associated with op-amps. The op-amp comprises several main stages, each being assigned with a distinct operation.

This stage is an input stage that possesses the ability to receive and boost differential input signals through the use of transistors which make a difference between the two input voltages. After this, the power stage increases the signal using either transistors or resistors in what can be referred to as the gain stage.

The level-shifting stage enhances the DC level of the signal, to make the signal range appropriate for the next stage, also important when connecting to other devices or systems that need specific voltage signals.

The last stage of the amplifier is the output amplifier which produces the desired signal having the amplified and adjusted value at the output. It is intended to make this stage deliver the high current drive capability at the same time as the low output impedance.

The op-amp has a positive supply voltage known as +VCC and a negative supply voltage known as -V EE which supplies power to the internal circuit.