Design of current-mode CMOS multiple-valued schmitt triggers based on switch-signal theory

被引：0

作者：

Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China ^{[1
]}

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来源：

Tien Tzu Hsueh Pao | 2006年 / 5卷 / 924-927期

关键词：

Computer simulation - Computer software - Electric currents - Electric potential - Hysteresis - Mathematical models - Signal theory - Switching theory - Threshold voltage - Transistors - Trigger circuits;

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摘要：

Guided by the switch-signal theory, the operations of current transmission switch used to describe the action of threshold-controllable switch in multiple-valued Schmitt trigger were established, and novel current-mode CMOS ternary and quaternary Schmitt triggers with output current and voltage signal were presented. The hysteresis current values of multiple-valued Schmitt triggers were controlled by only sizing the transistor aspect ratios. The main properties of the circuit are its simple structure, fully adjustable hysteresis and suitable for low-voltage applications. The designed circuits are simulated using HSPICE program and the model parameters of a TSMC 0.25 μm CMOS process, with 1.5V power supply. From the simulation results, the effectiveness of the proposed approach and the ideal characteristic of multiple-valued Schmitt circuit are validated.

引用

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