0.35um SiGe BiCMOS Front-End Amplifier For optical communication
A 10Gb/s front-end amplifier for optical receiver is realized in a 0.35um SiGe BiCMOS technology. It combines a preamplifier and a limiting amplifier and both are realized with differential architecture. The preamplifier is realized as a transimpedance amplifier with common base input stage. The limiting amplifier consist two stages of Cherry-Hooper architecture. The Simulation shows that the amplifier achieves gain of 102.2dB with constant output swing (450 mVp-p) at a bit rate of 10Gb/s.