Current-Mode Circuits Based on SIMO OTA: Review and New Applications in Filters

Abstract

The paper deals with design of low-order RC filters working in current mode (CM). As the basic building blocks, transconductors (OTA) with single input and multiple outputs are used. One-loop, two-loop and multi-loop structures are discussed. The adjoint VM-CM transformation is used to obtain new circuits from known VM prototype. The designed structures are verified by Pspice simulations using models of OTAs on transistor level of description.The paper deals with design of low-order RC filters working in current mode (CM). As the basic building blocks, transconductors (OTA) with single input and multiple outputs are used. One-loop, two-loop and multi-loop structures are discussed. The adjoint VM-CM transformation is used to obtain new circuits from known VM prototype. The designed structures are verified by Pspice simulations using models of OTAs on transistor level of description.