A very high-speed CMOS 4-2 compressor using fully differential current-mode circuit techniques

This paper presents a new high-speed CMOS 4-2 compressor which is an essential part in fast digital arithmetic integrated circuits. Current-mode techniques have been used to improve the overall performance of the compressor. New fully differential proposed circuit improves speed up to 45% also reduces occupied area in comparison to other high-speed conventional compressor circuits. To evaluate the performance of the proposed circuit, two other structures have been chosen and all of the circuits have been simulated in 0.18 μm standard TSMC CMOS process with 1.8 V power supply voltage.