Abstract
An improved performance current feedback amplifier circuit referred to as CFA feedback current feedback amplifier (CCFA) is described in this paper. This circuit is developed as an augmentation to the operational current feedback amplifier which employs a technique involving the incorporation of the input circuit of the current feedback amplifier in the feedback loop of an operational amplifier to reduce the input impedance at the inverting terminal of the current feedback amplifier. The proposed circuit replaces the operational amplifier with AD8004 CFA and the circuit possesses the gain accuracy and bandwidth of the current feedback amplifier. The new realization significantly enhanced the bandwidth accuracy and bandwidth gain-independence. The simulation of the proposed circuit has been performed using PSPICE. Various configurations using AD8004 CFA and LT1364 OPA have been simulated and the satisfactory results were obtained.
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