Current-mode Band-pass Filter Using A Single CDTA
N. A. Shah, S. Z. Iqbal and Munazah Quadri
In this paper, a new current-mode (CM) second-order band-pass (BP) filter employing a single recently introduced active device current differencing transconductance amplifier (CDTA), two each of capacitors and resistors is proposed. The circuit besides employing a minimum number of components offers independent but sequential tuning of pole frequency (ωo), quality factor (Q), and gain (H). The later two parameters are electronically adjustable in an independent manner. The circuit enjoys cascadibility feature. PSPICE-simulated results are included.
Keywords: Current differencing transconductance amplifier, Current-mode active filters.