Replica biased complementary CMOS comparator

Abstract

A novel comparator based on popular self-biased complementary CMOS solution is presented and examined. Its current consumption does not depend on the process variations, the supply voltage and the temperature. This is achieved by using a replica biasing. It can provide output currents during switching, which are larger than its quiescent current, like the adaptive-biasing solutions. Simulations of schematic example confirm the proper operation of the presented comparator.