Question

What to be taken first for selecting an op amp to be used for large signal amplification of high frequency signal

Answer 1

Explanation:

At higher frequencies, the internal junction capacitors of transistor come into play, thus reducing the output and therefore the gain of amplifier. The capacitor reactance decreases with increase in frequency bypassing the majority of output. In some cases the output gets fed back to input as negative feedback.

Answer 2

Here is the answer

Operational Amplifier Circuits as Computational Devices. So far we have explored the use of op amps to multiply a signal by a constant