Abstract
In this paper, we demonstrate that, when treated as 4-terminal building blocks, the current feedback op-amps (CFOA) or transimpedance op-amps are more versatile than the traditional 3-terminal op-amps and 3-terminal Current Conveyors (CC), In realising a class of analog signal processing / signal generation functions which include impedance converters / inverters, voltage-controlled impedances (both grounded and floating), active filters (both current mode and voltage mode) and single-resistance-controlled/voltage-controlled sinusoidal oscillators. Novel CFOA-based configurations are, therefore, derivable which provide features all of which are not possible with the available op-amp-based or CC-based reallsations. The workability of the new structures is substantiated by experimental results based upon the commercially available transimpedance op-amp AD844.
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