New CMOS fully differential current conveyor and its application in realizing sixth order complex filter

A sixth order complex filter based on the usage of a newly proposed fully differential current conveyor (FDCC) is presented in this paper. The FDCC new structure is based on usage of differential difference operational floating amplifier (DDOFA) and floating current source circuits. The block is realized using 0.25 mum CMOS technology under plusmn1.5 V power supply. PSPICE simulation for the FDCC is done for testing the block. The simulation shows that the FDCC has plusmn0.5 V input dynamic range, 95 MHz 3-dB frequency at output terminal under 10 KOmega load and 7.21 mW total power dissipation. The FDCC is used to realize first order complex filter with 1 MHz center frequency and second order complex filter at 500 KHz center frequency. Finally; using cascading technique, a sixth order complex filter at 500 KHz center frequency is proposed. The proposed filter is suitable for applications like Bluetooth receivers. All the proposed filter circuits are simulated using ADS simulator.