IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Advanced Technologies in Digital LSIs and Memories
Highly Reliable Multiple-Valued Current-Mode Comparator Based on Active-Load Dual-Rail Operation
Masatomo MIURATakahiro HANYU
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2008 Volume E91.C Issue 4 Pages 589-594

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Abstract

In this paper, a multiple-valued current-mode (MVCM) circuit based on active-load dual-rail differential logic is proposed for a high-performance arithmetic VLSI system with crosstalk-noise immunity. The use of dual-rail complementary differential-pair circuits (DPCs), whose outputs are summed up by wiring makes it possible to reduce the common-mode noise, and yet enhance the switching speed. By using the diode-connected cross-coupled PMOS active loads, the rapid transition of switching in the DPC is relaxed appropriately, which can also eliminate spiked input noise. It is demonstrated that the noise reduction ratio and the switching delay of the proposed MVCM circuit in a 90nm CMOS technology is superior to those of the corresponding ordinary implementation.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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