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20-Gb/s CMOS EA/MZ Modulator Driver With Intrinsic Parasitic Feedback Network

机译:具有内部寄生反馈网络的20-Gb / s CMOS EA / MZ调制器驱动器

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This paper presents an inductive intrinsic parasitic feedback technique to enhance the circuit bandwidth of the electro-absorption/Mach–Zehnder optical modulator driver with high-voltage swing-driving capability. The modulator consists of a series-shunt inductor peaking predriver stage and a multicascode postdriver stage. The postdriver stage integrates the proposed inductive intrinsic parasitic feedback network, the interstage series inductor-peaking scheme, and the auxiliary source degeneration structure. The chip is fabricated in 0.13- $mu{rm m}$ mixed-signal 1P8M standard CMOS process with a die size of $900times 800~mu{rm m}^{2}$. The operation data rate of this design is measured up to 20-Gb/s with 3.7 $V_{rm PP}$ S.E. output amplitude swing, driving 50-$Omega$ resistive load with input signal less than 250 mV. The measured rise/fall time of the output electrical eye diagram is less than 20 ps and the total power consumption is 0.9 W with 1.2/4.0 V dual supplies.
机译:本文提出了一种电感本征寄生反馈技术,以提高具有高压摆幅驱动能力的电吸收/马赫曾德尔光学调制器驱动器的电路带宽。该调制器包括一个串联分流电感器峰值预驱动器级和一个多级共源后驱动器级。后驱动器级集成了拟议的电感本征寄生反馈网络,级间串联电感器峰值方案和辅助源极退化结构。该芯片采用0.13-μm混合信号1P8M标准CMOS工艺制造,管芯尺寸为900×800μm{2} $。在3.7 $ V_ {rm PP} $ S.E.下,该设计的操作数据速率最高可测量20 Gb / s。输出幅度摆幅,在输入信号小于250 mV时驱动50-Ω电阻负载。输出电眼图的测量上升/下降时间小于20 ps,使用1.2 / 4.0 V双电源时的总功耗为0.9W。

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