A few weeks ago, someone asked me about current-feedback op amps
and I had the very basic answer that they had a low-impedance
inverting input and relied on current, instead of voltage, to
drive this input. This gave the op-amps higher slew rate (and
bandwidth) at the expense of precision. A more thorough overview
of these op amps can be found in chapter eight of Texas
Instrument’s Op Amps for Everyone (linked below.) This is a four
hundred page book and has some well written sections on various
topics, including noise. An excellent read for those concerned
with analog design. ( slod006b.pdf )