Designing Prototype of the Spartan Ii Fpga Slice with the Current-mode Gates

The paper deals with the problem of designing main FPGA-cell blocks with the current-mode gates – novel digital gates operating with constant, continuous power supply current. Using proposed approaches to designing digital current-mode circuits, the current-mode prototypes of several digital circuits and the Spartan II slice are designed. The obtained circuits are characterized by smaller hardware overheads and switching noise level in comparison with the similar circuits based on the classical voltage type of gates. It proves the possibility of realization of field programmable mixed analog-digital array on a single die. Index Terms mixed analog-digital system, switching noise, current-mode gate, current-mode gate logic, field programmable array, system-on-chip.