Summary:
Design a Differential Amplifier based on the Input and Output Range Requirements.
What is the common usage of the differential amplifier? The circuit is used to amplify the difference between the input signals. However, there are times when the electronics designer is faced with the following problem: Given an input range of, say, -0.5V to 5.5V, the output has to swing between, say -1.25V and +2.365V. It is clear that this requires an amplifier with a certain gain and an offset different than zero. How can we design the differential amplifier to achieve such a function?

