FIRST ORDER CURRENT MODE FILTERS AND MULTIPHASE SINUSOIDAL OSCILLATORS USING CMOS MOCCIIS

摘要

Current conveyors have become very popular as these devices provide high performance and greater functional versatility in the realization of analog building blocks [1-15]. Several first order voltage-mode all pass sections (APSs) using current conveyors are available in technical literature [2,4,7,8]. However, current-mode (CM) circuits are also receiving much attention for their potential advantages such as inherent wider bandwidth, wide dynamic range, and better noise immunity [5,9,14,15]. Considering these advantages of CM circuits, recently several first-order all-pass filters using different active components have been reported [11-12]. Among these topologies, some require element-matching conditions even though with minimum component count while others require large component count and complex circuitry.