A VDIBA Based Voltage-Mode Highpass and Bandpass Filter

A VDIBA based voltage-mode (VM) highpass and bandpass filter topology is presented. The topology utilizes two VDIBA blocks, two capacitors and one resistor. The topology has three voltage inputs, two voltage output and can realize highpass (HP) and bandpass (BP) filter operation from the similar structure. The corner frequency and quality factor of VDIBA based filter is electronically tuneable by virtue of bias current of the internal transconductance. The topology operates with very low supply voltage of ±600 mV and external DC bias current of 150 μA. The simulations are carried out at 45-nm CMOS technology using Virtuoso Analog design Environment of Cadence.