--Neuromorphic systems have been primarily implemented using analog sub-threshold CMOS circuits primarily because the physics of subthreshold operation and biological signal processing are identical. The effects of attempting to model biology accurately, coupled with the slow dynamics of sub-threshold MOS circuits, have prevented these systems from capitalizing on the main benefit of silicon wh...

• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version ...

In the ultra low power end of design spectrum when performance is of secondary importance, digital subthreshold logic circuits are more applicable than the regular MOS logic. In this paper, we propose two different subthreshold logic families: 1) variable threshold voltage subthreshold CMOS (VT-Sub-CMOS) and 2) subthreshold dynamic threshold voltage MOS (SubDTMOS) logic. Both these logic famili...

In this paper a comparison of static and dynamic parameters of CMOS logic circuits operated in standard and sub-threshold regimes is presented. Analytic models of logic threshold voltage, logic delay and power consumption are derived for the sub-threshold operation regime. Certain analytic models analogies between these two regimes are shown. Threshold voltages of inverter, NAND and NOR logic c...