What are the differences between a differential amplifier and an op-amp? Both have two inputs. How do they differ from each other?
Answer
A differential amplifier traditionally has differential outputs: -
Opamps almost without exclusion have a single output. However, over the years the distinction has become a bit cloudy. For instance, this is also called a differential amplifier: -
Basically it's an op-amp with a differential input configuration.
Then there is the difference amplifier that I would say is the more correct way to describe the op-amp circuit above. There is also the Instrumentation amplifier (really just a difference amplifier): -
No comments:
Post a Comment