학술논문
112 GBaud (224 Gb/s) large output swing InP DHBT PAM-4 DAC-driver
Document Type
Conference
Author
Source
2022 24th International Microwave and Radar Conference (MIKON) Microwave and Radar Conference (MIKON), 2022 24th International. :1-4 Sep, 2022
Subject
Language
Abstract
In this paper, we report on the design, optimisation and and electrical measurements of a PAM-4 DAC-driver fabricated in 0.7-μm InP/GaAsSb DHBT technology, with the capability to directly drive an electro-optical modulator. Circuit measurements in PAM-4 mode show high diagram quality at 90 GBaud (180 Gb/s) with a record 5.5–V pp differential output swing. An over 12-dB gain control capability is shown. Moreover, a record 3.35-V pp output swing is obtained in PAM-4 at 112 GBaud (224 Gb/s). Power consumption is 1.1 and 0.6 W for two operating symbol-rates respectively.