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Title: Voltage-mode OTA-based active-C universal filter and its transformation into CFA-based RC-filter
Authors: Shah, N A
Rather, M F
Keywords: Voltage-mode filters
Operational transconductance amplifiers
Current feedback amplifiers
Issue Date: May-2006
Publisher: CSIR
Series/Report no.: H01S
Abstract: An absolute minimum component voltage-mode (VM) universal filter, employing two each of operational transconductance amplifiers (OTAs) and capacitors with three inputs and one output, is presented. The circuit can be transformed into CFA-based RC-filter involving two each of current feedback amplifiers (CFAs), capacitors and resistors. OTA-C circuit enjoys electronic tunability of filtering parameters while its CFA-based RC version offers low output impedance which suits cascadability. PSPICE simulation and the experimental results of both the circuits are included.
Description: 402-406
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.44(05) [May 2006]

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