Abstract
This paper presents a unified approach to the bandwidth analysis of amplifying stages, whose transfer function can be a voltage gain, current gain, transconductance or transimpedance. It uses the technique that involves modelling the feedback networks as voltage dividers. It takes advantage of the fact that, if the network between the opamp's output, and the node where the actual output is taken is linear, then the bandwidths at both points are equal. Therefore, calculating the bandwidth at the output of the operational amplifier will yield the desired result.
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