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Ultra low voltage, low power 4-2 compressor for high speed multiplications

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2 Author(s)
Jiangmin Gu ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Chip-Hong Chang

This paper presents a new low power 4-2 compressor capable of operating at an ultra-low voltage. Its merits are derived from a novel design of low-power XOR-XNOR gate at transistor level. The new circuit structure eliminates the weak logic on internal nodes in the XOR-XNOR module in contrast to the published designs. Driving capability has been considered in the design so that the 4-2 compressor cells can be used in the tree structured fast multiplier at low supply voltage. Simulation results show that the proposed 4-2 compressor is able to function at supply voltage as low as 0.6 V, and outperforms the conventional CMOS 4-2 compressor and variants of 4-2 compressor constructed with various combinations of recently reported superior low-power logic cells.

Published in:

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on  (Volume:5 )

Date of Conference:

25-28 May 2003