Design and applications of an easily integrable CMOS operational floating amplifier for the MegaHertz range

The design and major applications of a general purpose current mode building block are presented in this paper. This circuit is basically a high gain transconductance scheme with differential current output terminals previously termed operational floating amplifier (OFA). The novel structure proposed here is shown to implement a very flexible and high performance amplifier which can be used in almost all applications employing conveyors, current feedback amplifiers or even conventional operational amplifiers with improved performance characteristics. This presentation is also supported by experimental measurements on a prototype circuit realized in CMOS technology.