A 1.55ns 0.015 mm² 64-bit quad number comparator

摘要

This paper proposes a fast and small area 64-bit quad binary number comparator. Proposed bit-wise comparing logic chain (BCLC) and sequential strobes (SS) scheme enables 1.55 ns 64-bit quad binary number comparison, which is 16% improvement compared to conventional comparator. With the help of BCLC and SS scheme, the proposed quad binary number comparator consumes 0.015 mm² in 0.18 um CMOS technology. Compared to previous works, the proposed comparator shows 9% reduction of transistor count and 13% area reduction.