InP-based DHBT technology for high-speed mixed signal and digital applications

We report on an InP DHBT-based technology featuring current gains of ~ 90, breakdown voltages of Gt 4.5 V and cut-off frequency (f
_T
) values of Gt 300 GHz. Using this technology, state-of-the-art mixed signal integrated circuits, including distributed amplifiers (DAs), multiplexers (MUX) / demultiplexers (DEMUX), and clock and data recovery (CDR) ICs suitable for 100+ Gbit/s applications have been demonstrated. The DA-MMICs achieved gains of ~ 21 dB, 3-dB bandwidths of ges 95 GHz (gain-bandwidth-products Gt 1 THz), as well as output voltages of up to 3 V at 100 Gbit/s. A monolithically integrated CDR/1:2 DEMUX IC has also successfully been tested at data rates of up to 107 Gbit/s.