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A High-Speed and Multi-Chip WTA/MAX Circuit Design Based on Averaged-Value Comparison Approach

Kuo-Huang LIN, Chi-Sheng LIN, Bin-Da LIU

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Summary :

This paper presents a voltage-mode WTA/MAX circuit that achieves high-speed and multi-chip features. Based on the efficient averaged-value comparison approach, the time and hardware complexities are proportional to O(log N) and O(N) respectively, where N is the number of inputs. In addition, a voltage comparison element (VCE) circuit is proposed to achieve multi-chip function. In the proposed circuit, the averaged-value calculator is built using resistor array that prevents the matching problem of transistor array. The whole circuit was fabricated with the TSMC 0.35 µm signal-poly quadruple-metal CMOS process. With eight input signals, the measurement results show that the proposed circuit resolved input voltages differing by 10 mV in 30 ns, and the multi-chip capability was also verified.

Publication
IEICE TRANSACTIONS on Electronics Vol.E87-C No.10 pp.1724-1729
Publication Date
2004/10/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Electronic Circuits

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