The Bandwidth of an Operational Amplifier Circuit quickly drops when "some gain" is needed. To overcome this,
opamps in series may help to increase the overall Bandwidth. This tools shows you the interrelation between
number of amplifiers, GBWP, overall Bandwidth and overall Gain.
A three stage design lowers the GBWP by a factor of ~ 11 compared to a single stage design.
Nobody explains it better than Dave ...
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