Title :
Fully integrated auto-zero feedback with lower cutoff frequency below 50 kHz in a 40 GBit/s transimpedance amplifier
Author :
Knochenhauer, Christian ; Wolf, Robert ; Sedighi, Behnam ; Ellinger, Frank
Author_Institution :
Dept. of Circuit Design & Network Theor., Tech. Univ. Dresden, Dresden, Germany
Abstract :
This paper presents a fully integrated auto-zero feedback for use in analog frontends of high-speed optical communication systems. The feedback provides a lower cutoff frequency of 30 kHz without needing any external capacitor. It is implemented and proved in a 40 GBit/s transimpedance amplifier fabricated in a 0.25 μm SiGe BiCMOS technology. The TIA provides >;27 dB gain with a bandwidth of >;34 GHz over an input current range from 0 to 0.8 mApp.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; integrated optoelectronics; operational amplifiers; optical communication equipment; BiCMOS technology; SiGe; analog frontends; bit rate 40 Gbit/s; external capacitor; fully integrated autozero feedback; high speed optical communication systems; lower cutoff frequency; size 0.25 mum; transimpedance amplifier; BiCMOS integrated circuits; Current measurement; Cutoff frequency; Feedback loop; Frequency measurement; Gain; Silicon germanium; BiCMOS; integrated circuit packaging; opto-electronic integrated circuit; transimpedance amplifier (TIA);
Conference_Titel :
Semiconductor Conference Dresden (SCD), 2011
Conference_Location :
Dresden
Print_ISBN :
978-1-4577-0431-4
DOI :
10.1109/SCD.2011.6068764
