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文章在对LVDS发射器电路的基本原理与传统结构研究的基础上,完整地设计了基于0.25μm CSMC工艺的一种高速低电压差分信号(LVDS)发射器电路。对比于传统的发送电路,文中对部分电路做出了改进,设计了片内集成的共模反馈控制和逻辑使能控制,同时为了提高该电路的工作速度,还设计了一个电流补偿电路来改善输出的时延特性,使得其最高工作速率能达到622 Mbps。仿真结果表明,在5V工作电压下,数据传输速率为600 Mbps时,平均功耗仅为20mW,电路性能完全符合IEEE Std 1596.3—1996标准。
Based on the study of the basic principle and the traditional structure of the LVDS transmitter circuit, a high speed low voltage differential signaling (LVDS) transmitter circuit based on the 0.25μm CSMC process is fully designed. Compared with the traditional transmission circuit, some improvements have been made to the part of the circuit, and the common-mode feedback control and logic enable control are designed. At the same time, in order to improve the speed of the circuit, a current compensation circuit is also designed to improve Output delay characteristics, making it the highest working rate can reach 622 Mbps. Simulation results show that the average power consumption is only 20mW at a data transfer rate of 600 Mbps at a 5V working voltage, and the circuit performance fully complies with the IEEE Std 1596.3-1996 standard.