A 200-Gb/s 70-GHz-bandwidth 2:1 analog multiplexer in 130-nm SiGe BiCMOS process

抄録

This paper presents a 2: 1 analog multiplexer (AMUX) using IHP’s 130-nm SiGe BiCMOS process. The proposed AMUX expands the analog bandwidth (BW) of CMOS-based DACs by introducing interleaving sampling technique, thus improving the data rate of single lane in modern optical communication systems. Meanwhile, a detailed analysis of process selection which particularly focuses on material and device considerations is adopted, and a principle of the BW expansion is comprehensively discussed. The AMUX exhibits a BW >70 GHz, achieving a data rate of 200 Gb/s under PAM-4 modulation.