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pass subranging flash analog-to-digital converters.
At the time of writing, current feedback opamps
are available from five American manufacturers,
including Analog Devices. We can expect to see
more manufacturers offering such devices in the
future, including the big names in the linear IC
business.
Finally, in this section on opamps, mention must
be made of Norton opamps such as the LM39ÜÜ
and the MC33()1. These are generally similar to
conventional opamps but, although they have a
differential input, it is ground referenced rather
than floating as in a conventional opamp. Conse-
quently they are mainly used in single