Greetings,
I am finding it difficult to answers regarding Gain Bandwidth. Specifically, WHY an unity gain amplifier, for example, will begin to drive its output to zero at higher frequencies. The math is straight-foreword, but the specifics as to why are either not covered, or I'll get conflicting answers (ie capacitance at high frequencies behave more like inductors/shorts / less voltage across load resistors which means less voltage read on a scope / etc). Additionally, the behavior of gain bandwidth vs slew rate sound very similar: the performance of the amplifier is limit by the frequency that you input to it. Would anyone be able to provide some clarification or point me in the direction of some documentation that I could read up on?
I am finding it difficult to answers regarding Gain Bandwidth. Specifically, WHY an unity gain amplifier, for example, will begin to drive its output to zero at higher frequencies. The math is straight-foreword, but the specifics as to why are either not covered, or I'll get conflicting answers (ie capacitance at high frequencies behave more like inductors/shorts / less voltage across load resistors which means less voltage read on a scope / etc). Additionally, the behavior of gain bandwidth vs slew rate sound very similar: the performance of the amplifier is limit by the frequency that you input to it. Would anyone be able to provide some clarification or point me in the direction of some documentation that I could read up on?