Abstract
A bandwidth improvement method of current mode logic (CML) drivers, of the integral circuit type specifically designed for high-speed serial data transmission systems is presented. These drivers are characterized by their ability to operate at high frequencies and their ability to provide a high level of signal integrity, which is critical for achieving high data rates and low error rates in high-speed systems. The key advantages of CML drivers such as providing a high level of signal integrity, the circuit topologies, operating modes, and performance characteristics are discussed. Furthermore, the challenges and limitations of CML drivers, as well as the recent advances in the field that enables the use of CML drivers in high-speed systems are also discussed. A driver constructed by the proposed method operating at 112 Gbps in PAM4 modulation consumes 9 mW under 0.9 V supply.
Publisher
National Polytechnic University of Armenia
Subject
Economics and Econometrics,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment,Ophthalmology,Surgery
Reference5 articles.
1. Sepehrian H., Alie S., Madeira P., and Tonietto D. 106 Gb/s PAM-4 Transmitter With 2.1 Vppd Swing in 7nm FinFET Process // 2021 Symposium on VLSI Circuits.- Kyoto, Japan, 2021.- P. 1-2, doi: 10.23919/VLSICircuits52068.2021.9492349.
2. Roshan-Zamir A., Elhadidy O., Yang H. -W., and Palermo S. A Reconfigurable 16/32 Gb/s Dual-Mode NRZ/PAM4 SerDes in 65-nm CMOS// IEEE Journal of Solid-State Circuits.- Sept. 2017.- Vol. 52, no. 9.-P. 2430-2447, doi: 10.1109/JSSC.2017.270¬5070.
3. Song E., Yang J., Hong S., and Han J. A 32-Gb/s High-Swing PAM-4 Current-Mode Driver with Current-Bleeding Cascode Technique and Capacitive-Coupled Pre-drivers in 40-nm CMOS for Short-Reach Wireline Communications// 2022 IEEE 65th International Midwest Symposium on Circuits and Systems (MWSCAS). - Fukuoka, Japan, 2022.-P. 1-4, doi: 10.1109/MWSCAS54063.2022.9859487.
4. Hspice Reference Manual, Synopsys Inc.- 2017. -846p.
5. Melikyan V., Martirosyan M., Piliposyan G. 14nm Educational Design Kit: Capabil¬it¬i¬es, Deployment and Future// Small Systems Simulation Symposium. - 2018. -P. 42-55.