Selective similarity function for VLSI analog signal processing

被引：2

作者：

Madrenas, J ^{[1
]}

Fernández, D ^{[1
]}

Cosp, J ^{[1
]}

Alarcón, E ^{[1
]}

Vidal, E ^{[1
]}

Villar, G ^{[1
]}

机构：

[1] Univ Politecn Catalunya, Dept Elect Engn, ES-08034 Barcelona, Spain

来源：

2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS | 2005年

关键词：

D O I：

10.1109/ISCAS.2005.1465489

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The similarity calculation of two input voltages can he performed in the analog domain by means of a very compact current switch combined with a differential pair stage. Local feed-forward of the current switch allows the circuit to work without the need of any external control ensuring at the same time very high selectivity. The current switch is analyzed by means of its large-signal model since the first-order small-signal model is not enough to obtain insight on its behavior. The obtained peak cell circuit is applied to bioinspired gray-level image segmentation focal-plane processor. Other direct applications of the current switch are full-wave differential rectifiers and two-input maximum/minimum circuits.

引用

页码：3926 / 3929

页数：4

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