Hi,
Yes but if we got gain up to the output of the current mirrors with higher slew rate then that means we saw an advantage, at least up to that point. What we do after that will depend on what we need after that for the application. We might find a use for that.
For a simple example, perhaps we can use a cheaper op amp as the first op amp and a more expensive one as the output stage, assuming we need that kind of 'buffering' for the application.
Or maybe build our own op amp for the output stage, or maybe just some transistor buffering.
Yes but if we got gain up to the output of the current mirrors with higher slew rate then that means we saw an advantage, at least up to that point. What we do after that will depend on what we need after that for the application. We might find a use for that.
For a simple example, perhaps we can use a cheaper op amp as the first op amp and a more expensive one as the output stage, assuming we need that kind of 'buffering' for the application.
Or maybe build our own op amp for the output stage, or maybe just some transistor buffering.