1999•IEEE Journal of Solid-State CircuitsRequires access
A wide-dynamic-range, high-transimpedance Si bipolar preamplifier IC for 10-Gb/s optical fiber links
Kenichi Ohhata, Takatsugu Masuda, Kazuo Imai, R. Takeyari, Katsuyoshi Washio
Open publisher page 33 citations
Abstract
A wide-dynamic-range, high-transimpedance preamplifier IC for 10-Gb/s optical fiber links was developed using a 0.3-/spl mu/m Si bipolar process. The preamplifier with a limiting amplifier enables a wide dynamic range from 16 /spl mu/App to 2.5 mApp and a high transimpedance of 1 k/spl Omega/ (2 k/spl Omega/ in the differential output mode). Moreover, careful circuit design achieves a transimpedance fluctuation of 0.5 dBR and an average equivalent input noise current density of 12 pA//spl radic/Hz. This preamplifier IC has the highest transimpedance of any Si bipolar preamplifier for 10-Gb/s operation. Thus, the preamplifier is suitable for 10-Gb/s short-haul optical fiber links and can be used to provide a low-cost system.