Subthreshold Source-Coupled Logic Circuits for Ultra-Low-Power Applications Armi

Abstract

er , Member , IEEE, Yusuf Leblebici, Senior Member , IEEE, and Eric Vittoz , Life Fellow, IEEE Abstract—This paper presents a novel approach for imple- menting ultra-low-power digital components and systems using source-coupled logic (SCL) circuit topology, operating in weak inversion (subthreshold) regime. Minimum size pMOS transistors with shorted drain-substrate contacts are used as gate-controlled, very high resistivity load devices. Based on the proposed ap- proach, the power consumption an