Fully Synthesizable Dynamic Voltage Comparator across technology nodes and scaled supply voltages

A fully synthesizable rail-to-rail dynamic voltage comparator referring to different technology nodes and supply voltages down to 0.3V is presented in this paper. The analyzed circuit is composed of standard cells only so that the design flow can be automated, and based on its digital nature, it enables a supply voltage scaling down to deep sub-threshold. The specifications of the same topology are investigated with post-layout simulations under different technology nodes such as 180nm, 130nm, and 40nm and across scaled supply voltage ranging from 0.9 down to 0.3 V. Delay versus common and differential mode of the input and power and offset versus common mode. On this basis, pros and contras across technology and voltage scaling are highlighted to suit integration into sensor nodes for the Internet of Things and related applications.