Design a Configurable First Order Universal Filter Using a Single EX-CCCII

Abstract

In this work, a single active element (Extra-X Current Controlled Conveyor) with grounded capacitor is used to design a reconfigurable first-order universal filter (CFUF). By simply swapping the digital control words (k₁k₂), the suggested circuit may implement all of the common filter responses, including high-pass, low-pass, and all-pass. An EX-CCCII serves as the active element in the filter setup, which is based on a novel topology, which provides several advantages, such as reduced complexity, low power consumption, and improved performance. The following advantages of the proposed circuit: high input impedance for voltage input signals, electronically controllable pole frequency that varies with bias current, and a single grounded capacitor that can be integrated into an IC. At a power supply level of ±0.5 V, the proposed circuit is modeled using specifications for 0.18-micrometer CMOS technology. PSPICE simulation tool is used to demonstrate the filter’s performance.