Current mode filters with reduced complexity using a single EX-CCCII |
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Affiliation: | 1. Diagnosis and Training Center for Fish Diseases, National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 422-1 Nakatsuhamaura, Minami-Ise, Mie 516-0193, Japan;2. Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Uwajima, Japan;3. Headquarters, Japan Fisheries Research and Education Agency, 15F Queen''s Tower B, 2-3-3 Minato Mirai, Nishi, Yokohama, Kanagawa 220-6115, Japan;4. National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 422-1 Nakatsuhamaura, Minami-Ise, Mie 516-0193, Japan |
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Abstract: | In this paper an active element Extra-X current controlled conveyor (EX-CCCII) is used to reduce the complexity of some existing circuits. Two second-order current-mode biquadratic filter circuits are proposed, each using a single active element and two grounded capacitors. The first circuit is three input single output (TISO) and the second one is single input three outputs (SITO) biquadratic filter. The First circuit can realize all the standard filter transfer functions, while the second circuit can realize LP, BP and HP responses. The study of non-idealities and parasitics of the active element and their effects on transfer functions is carried out. The new circuits are found to be simpler than the earlier ones in terms of number of transistors. The functionality of the proposed biquadratic filters is verified through detailed PSPICE simulations using 0.25 µm TSMC CMOS technology parameters. |
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Keywords: | Current mode Analog signal processing EX-CCCII Biquad-filters |
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