Electronic Tunable Bi-Quad Filter Using MO-CCCDTA

This paper presents an active resistor less analog bi-quad filter having multiple input and single output (MISO). It consists of one multiple output current controlled current differencing transconductance amplifier (MO-CCCDTA) as an active block and 2 grounded capacitors. The proposed circuit would realizes low-pass filter (LPF), high-pass filter (HPF) and band-pass filter (BPF). The passive elements used in the presented design are grounded and no resistor, it utilizes the internal resistance of the active block, so it is easy to implement. The proposed MO-CCCDTA is MOS based uses 0.18μm TSMC CMOS technology with supply voltage of ±1.5 V. Non-ideal analyses with parasites effects are calculated. The theoretical postulations are verified through PSPICE simulation and post layout simulation. Its parameters are tunable. Monte-Carlo analysis and percentage Total Harmonic Distortion (THD) response are performed. The proposed design has high output impendence, so easy to cascade with other current mode circuits. The simulation results validate the theoretical proposition.