CMOS current-controlled current differencing transconductance amplifier and applications to analog signal processing |
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Authors: | Montree Winai |
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Affiliation: | aDepartment of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut's Institute of Technology North Bangkok, Bangkok 10800, Thailand;bElectrical and Electronic Program, Faculty of Industrial Technology, Suan Sunandha Rajabhat University, Bangkok 10300, Thailand |
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Abstract: | This article presents design of a basic current-mode building block for analog signal processing, named as current-controlled current differencing transconductance amplifier (CCCDTA). Its parasitic resistances at two current input ports can be controlled by an input bias current. Owing to working in current-mode of all terminals, it is very suitable to use in a current-mode signal processing, which is continually more popular than a voltage one. The proposed element is realized in a CMOS technology and is examined the performance through PSPICE simulations. They display usability of the new active element, where the maximum bandwidth is 311 MHz. The CMOS CCCDTA performs low power consumption and tuning over a wide current range. In addition, some examples as a current-mode universal biquad filter, floating inductance simulator and quadrature oscillator are included. They occupy only single CCCDTA. |
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Keywords: | CCCDTA Biquad filter CMOS Inductance simulator Quadrature oscillator |
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