MTT SEL_DDA

We report a 2:1-selector-driver based on a differential distributed amplifier realized in a 0.7-µm indium phosphide (InP) double heterojunction bipolar transistor (DHBT) technology. From transistors reaching FT/FMAX of 320/380 GHz and a breakdown voltage (BVCEO) of 4.5 V, the selector-driver provides a differential eye amplitude of up to 6.2 VPP and 5.9 VPP at up to 100 Gb/s and 112 Gb/s, respectively, for a power consumption of 3.8 W, achieving a record swing-speed product of respectively 620 VGb/s and 660 VGb/s.