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Universal Current-Mode Biquad Filter Using a VDTA

DOI: 10.4236/cs.2013.41006, PP. 29-33

Keywords: Current Mode Filter, Voltage Differencing Transconductance Amplifier

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Abstract:

This paper presents a new current-mode single input multi output (SIMO) type biquad employing one voltage differencing transconductance amplifier (VDTA), two grounded capacitors and a single grounded resistor. The configuration realizes all basic filter functions (i.e. Low Pass (LP), High Pass (HP), Band Pass (BP), Notch (BR) and All Pass (AP)). The natural frequency (ω0) and bandwidth (BW) are independently tunable. The workability of proposed configuration has been verified using SPICE simulation with TSMC CMOS 0.18 μm process parameters.

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