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采用0·35μmCMOS工艺设计2·5Gbit/s速率光纤通信用收发全集成电路.发射部分包括复接和激光驱动电路,完成4路622Mbit/s随机信号输入、1路2·5Gbit/s驱动信号输出的功能;接收部分完成1路2·5Gbit/s微弱随机信号输入、4路622Mbit/s分接输出功能.主要电路包括前置放大、限幅放大、时钟恢复、数据判决和1∶4分接.测试结果显示,2·5Gbit/s光纤通信用发射芯片逻辑功能正确,激光驱动器输出数据眼图10%~90%上升、下降沿时间分别为211·1ps和200ps;2·5Gbit/s光纤通信用接收芯片接收灵敏度优于20mV,恢复出的数据和时钟分别经过1∶4数据分接和1∶4时钟分频后,相位抖动的均方根值分别为15·6ps和1·9ps.两芯片均适用于2·5Gbit/s速率光纤通信系统.
Using 0 · 35μmCMOS technology design 2.5Gbit / s rate optical fiber communication transceiver integrated circuits. The transmitting part includes multiplexing and laser driver circuit, complete 4 622Mbit / s random signal input, 1 2.5Gbit / s drive signal output The receiving part completes a weak 2.5Gbit / s weak random signal input and a 4-way 622Mbit / s tap output function.The main circuit includes preamplifier, limiting amplification, clock recovery, data decision and 1: 4 tap The test results show that the logic function of the 2.5Gbit / s transmitter is correct, and the output data eye of the laser driver rises from 10% to 90% with the falling times of 211 · 1ps and 200ps respectively. The 2.5Gbit / s optical fiber communication Receiver chip receiver sensitivity is better than 20mV, the recovered data and clock after 1: 4 data tap and 1: 4 clock frequency division, the phase jitter rms values were 15.6ps and 1. 9ps. Two The chips are suitable for 2.5Gbit / s rate optical fiber communication system.