A power-efficient switchable CML driver at 10 Gbps

High static power limits the application of conventional current-mode logic（CML）.This paper presents a power-efficient switchable CML driver,which achieves a significant current saving by 75% compared with conventional ones.Implemented in the 130 nm CMOS technology process,the proposed CML driver just occupies an area about 0.003 mm2 and provides a robust differential signal of 1600 mV for 10 Gbps optical line terminal（OLT）with a total current of 10 mA.The peak-to-peak jitter is about 4 ps(0.04TUI) and the offset voltage is 347.2 mV @1600 mVPP.