TRANSLINEAR CIRCUITS USING SUBTHRESHOLD FLOATING-GATE MOS-TRANSISTORS

We describe a family of current-mode circuits with multiple inputs and multiple outputs whose output currents are products and/or quotients of powers of the input currents. These circuits are made up of multipl e-input floating-gate MOS (FGMOS) transistors operating in the subthre shold regime. The powers are set by capacitor ratios; hence, they can be quite accurate. We analyze the general family of such circuits and present experimental data from several members that we fabricated in a standard 2 mu m double-poly p-well process through MOSIS.