A 40-Gb/s Modulator Driver Using Cascade Swing Compensation in 90 nm CMOS

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Microwave and Wireless Components Letters Pub Date : 2022-09-01 DOI:10.1109/LMWC.2022.3167988

Chih-Cheng Lin, Shang Hong, S. Hsu

引用次数: 0

Abstract

This letter presents a high-speed optical modulator driver with a large output swing in 90-nm CMOS technology. A new topology of cascade swing compensation (CSC) output stage is proposed for protecting the transistors from breakdown using dynamic gate biasing without extra RC networks. To enhance the bandwidth and gain, the active feedback with T-coil peaking and the negative capacitance with series peaking are employed in the preamplifier and main driver, respectively. Under a power consumption of 767 mW, the measured results demonstrate an operating data rate up to 40 Gb/s with a maximum differential output swing of

$4.5~V_{\mathrm {ppd}}$

obtained at 32 Gb/s.

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基于级联摆幅补偿的40gb /s调制器驱动

这封信介绍了一种在90nm CMOS技术中具有大输出摆幅的高速光调制器驱动器。提出了一种新的级联摆幅补偿（CSC）输出级拓扑结构，用于在没有额外RC网络的情况下使用动态栅极偏置来保护晶体管免于击穿。为了提高带宽和增益，前置放大器和主驱动器分别采用了具有T线圈峰值的有源反馈和具有串联峰值的负电容。在767mW的功耗下，测量结果表明，在32Gb/s下获得的操作数据速率高达40Gb/s，最大差分输出摆幅为$4.5~V_｛\mathrm｛ppd｝｝$。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

期刊介绍： The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.