2018 Volume 15 Issue 3 Pages 20171085
High-speed optical interconnects require compact, low-power driver electronics for optical modulators. Inverter based CMOS driver circuits show very low power consumption. However, the output swing is typically limited to the supply voltage which is typically insufficient for optical modulators, requiring a cascoded output driver and level shifter. In this work, we present a new DC-coupled thin-oxide level shifter topology in a 28 nm FDSOI CMOS technology enabling data rates up to 50 Gb/s with a power efficiency of 0.064 pJ/bit.