BiCMOS Current-Controlled Current Feedback Amplifier (CC-CFA) and Its Applications

This paper introduces a modified version of current feedback amplifier (CFA), called current controlled current feedback amplifier (CC-CFA), to extend usabilities of this active element in terms of electronic control-abilities and simpler circuit description of the element's applications. This modified element was realized by using a BiCMOS standard technology to reduce offset error phenomenon, the design configuration is systematically explained. The performances have been proven through PSPICE which is accordance with theoretical anticipations. In addition, application examples for a current-mode multiplier/divider, oscillator, grounded inductance simulator, filters, and amplifiers are included. The results are confirmed that the electrical characteristics are electronically tunable.

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