Design and Evaluation of a Differential Switching Gate for Low-Voltage Applications

Abstract

A new basic switching gate based on differential logic is proposed for implementing high-performance low-voltage VLSI. Differential switching gate operates in current domain and output voltage swing can be determined independent of supply voltage, which leads to a high frequency operation even if in a lower-supply-voltage condition. Moreover, the use of a modified pMOS load further improves the transient characteristic of the switching gate. Through an evaluation of a differential logic-based combinational circuit, a potential capability of the differential switching gate is demonstrated.