Current sensing completion detection for subthreshold asynchronous circuits

In this paper a novel completion detection method for self-timed, asynchronous subthreshold circuits is presented. By employing the self-timed operation principle, substantial speed gains in the operation of the asynchronous pipelines can be realized. The completion detection system is very simple,...

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Bibliographic Details
Published in:	2007 18th European Conference on Circuit Theory and Design pp. 376 - 379
Main Authors:	Can Akgun, O., Leblebici, Y., Vittoz, E.A.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-08-2007
Subjects:	Adders Asynchronous circuits Clocks CMOS process Delay Digital circuits MOSFETs Pipelines Power dissipation Voltage
Online Access:	Get full text
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Summary:	In this paper a novel completion detection method for self-timed, asynchronous subthreshold circuits is presented. By employing the self-timed operation principle, substantial speed gains in the operation of the asynchronous pipelines can be realized. The completion detection system is very simple, consisting of a sensor transistor, a very basic AC-coupled amplifier and a monostable multivibrator. The proposed method can be easily integrated into the CMOS design flow. The advantages of the proposed completion detection system is shown through simulations on an 16-bit ripple carry adder in a standard 0.18 mum CMOS process operating at 400 mV supply voltage.
ISBN:	1424413419 9781424413416
DOI:	10.1109/ECCTD.2007.4529611