25Gbps多通道MZM驱动器设计

Design of a 25 Gbps multi-channel MZM driver

本文提出了一种面向高密度集成的多通道Mach-Zehnder调制器的驱动器电路结构,单通道驱动器包含信号均衡器、时钟树模块、时钟延时控制模块和输出摆幅控制模块等电路,支持各通道25GHz高速差分时钟延时与驱动器输出摆幅的独立可调,以及最高25Gbps的NRZ数字信号传输.基于TowerJazz0.18μm SiGe BiCMOS工艺,完成了6通道驱动器的芯片设计.仿真结果表明,单通道带宽达到17.2GHz,最大差分输出摆幅为3Vppd,Jitter约为8.9ps,在2.3/3.6V双电源供电下单通道功耗约为646.9mW.

A design of multi-channel Mach-Zehnder modulator driver aiming at high-density integration is proposed in this paper, the single-channel circuits consists of signal equalizer, clock tree, delay control module, output swing control module and other amplifying components, supporting delay-tunable 25 GHz high-speed differential clock signals, swing-tunable differential outputs, and up to 25 Gbps NRZ digital signal transmission. Based on TowerJazz 0.18 μm SiGe BiCMOS technology, the driver chip consists of 6 individual channels, with a bandwidth of 17.2 GHz, a maximum output swing of 3 Vppd and an jitter of 8.9 ps. The chip consumes 646.9 mW from a dual power supply of 2.3/3.6 V.