可用于光纤用户网的0.6μm CMOS激光驱动器

基于国内的CMOS技术和EDA工具以及全定制的设计方法,采用无锡华晶上华(CSMC-HJ)0.6μm CMOS技术实现了可工作于155Mb/s、622Mb/s的激光驱动器.该激光驱动器在50Ω负载上输出电流摆幅从0到50mA可调.在输出级3V直流偏置时最大输出电压摆幅可达2.5Vpp.输出电压脉冲的上升、下降时间分别小于471ps和444ps.四个工作速率下均方根抖动都小于30ps.电路在5V单电源供电时功耗小于410mW.芯片测试结果表明,该激光驱动器达到了世界同类集成电路的水平.

0.6μm CMOS Laser Diode Driver for Optical Access Networks

Using native CMOS technology,EDA tool,and adopting full-custom design methodology,a laser diode driver for the use of STM-1 and STM-4 optical access network,is realized by CSMC-HJ 0.6μm CMOS technology to modulate laser diodes at 155Mb/s (STM-1),622Mb/s (STM-4) with adjustable modulation current from 0 to 50mA for an equivalent 50Ω load.The maximum modulation voltage is over 2.5Vpp corresponding to a 3V DC bias for output stage.The time range of rise and fall from 360ps to 471ps is measured from the output voltage pulse.The RMS jitter is no more than 30ps for four bit rates.The power consumption is less than 410mW under a power supply voltage of 5V.According to the experimental results,the laser diode driver achieves the same level as their counterparts worldwide.