SiGe bipolar ICs for 20 Gb/s optical transmitter

Abstract

SiGe bipolar ICs, a selector, a multiplier and a D-type flip-flop, have been developed for a 20 Gb/s optical transmitter by using a self-aligned SiGe base bipolar transistor with bonded SOI technology. In the selector IC and the multiplier IC, an internal high speed clock buffer circuit accomplishes stable operation under a single clock input condition.