InP HBT XOR and phase-detector for 40 Gbit/s clock and data recovery (CDR)
22 May 2006
High-speed XOR and phase-detector circuit necessary for clock and data recovery were designed and fabricated in a self-aligned InP DHBT technology. In the paper, we present the circuit design with the special highlight of the architecture choice and design challenges. Measurements results of fabricated circuits are shown.