
1 Advanced circuit techniques,
components and concepts
Current feedback opamps
Many voltage feedback op-amps from the venerable 741 onwards are
internally compensated for gains down to unity. As a result, at higher
demanded gains, their bandwidth becomes increasingly restricted. Fully
or partially uncompensated ('decompensated') types are available,
permitting improved performance at a given gain. However, current
feedback op-amps offer high-speed performance without special
compensation measures, the speed being only slightly reduced as the
demanded gain increases.
CFBOs: delivering speed at any gain
Current feedback opamps have been aroun ...