MOS-Only Current-Mode Analog Signal Processing Functional Cores

MOS-only type signal processing devices received significant attention mainly due to trends in analog design works toward low-voltage low-power designs. Using this approach many limitations of analog filters especially frequency limitation among others is less pronounced compared to classical approach employing Op-Amps, Operational Transconductance Amplifiers, Current Conveyors, or similar active elements. In this work we present three MOS-only type current-mode analog functional filter cores. For illustration purpose, an application filter design example is given that is a novel filter topology and compared with its counterparts previously published in the literature.