One good text on this topic is application note AN18 by Jim Williams, which demonstrates various ways to increase an op amp’s output current, voltage swing, or both. Speaking about bandwidth ...
Looking at the circuit diagram it follows the classic op-amp with a long-tailed pair of NPN transistors driving a PNP gain stage and finally a complimentary emitter follower as an output buffer.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results