A fast and power-saving self-timed Manchester carry-bypass adder for Booth multiplier-accumulator design

In this paper, a fast and power-saving self-timed Manchester Carry-Bypass Adder (MCBA) is proposed based on the property analysis of the MCBA completion signal. By using a new self-timed approach, the critical path in the summation array of Multiplier-Accumulator (MAC) can be removed without convent...

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Bibliographic Details
Main Authors: I-Chyn Wey, Hwang-Cherng Chow, You-Gang Chen, An-Yeu Wen
Format: Conference Proceeding
Language:English
Subjects:
Acceleration
Adders
Circuit synthesis
Clocks
Delay
Design engineering
Digital signal processing
Energy consumption
Pipelines
Power generation
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Summary:In this paper, a fast and power-saving self-timed Manchester Carry-Bypass Adder (MCBA) is proposed based on the property analysis of the MCBA completion signal. By using a new self-timed approach, the critical path in the summation array of Multiplier-Accumulator (MAC) can be removed without conventional dual MCBA chain circuit. As a result, the speed of the proposed self-timed MCBA can be improved 23.3% and save 56.8% power consumption. Finally, a 16-bit 16-bit+40-bit Booth MAC with this new self-timed MCBA is demonstrated at 2.5V, 150MHz in UMC 0.25/spl mu/m process with 71.28mW power only.
DOI:10.1109/APASIC.2004.1349402