Title :
A New Performance Enhancement Technique of the Current Feedback Amplifier
Author :
Singh, Rakesh Kumar ; Nagaria, R.K.
Author_Institution :
Electron. Eng. Dept., Kamla Nehru Inst. of Technol., Sultanpur, India
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.
Keywords :
SPICE; feedback amplifiers; operational amplifiers; AD8004 CFA; LT1364 OPA; PSPICE; augmentation; bandwidth accuracy; bandwidth gain-independence; circuit possess; circuit simulation; current feedback amplifier; enhancement technique; gain accuracy; input circuit; input impedance; operational amplifier; Bandwidth; Circuit simulation; Feedback amplifiers; Feedback circuits; Feedback loop; Impedance; Operational amplifiers; SPICE; Telecommunication computing; Telecommunication control; CCFA; OCFA; bandwidth gain independence; current feedback amplifier; high performance analog crcuits;
Conference_Titel :
Advances in Computing, Control, & Telecommunication Technologies, 2009. ACT '09. International Conference on
Conference_Location :
Trivandrum, Kerala
Print_ISBN :
978-1-4244-5321-4
Electronic_ISBN :
978-0-7695-3915-7
DOI :
10.1109/ACT.2009.177
