Title :
A wide dynamic range transimpedance amplifier with high gain-bandwidth product for 10 Gb/s optical links
Author :
Jiang, Fan ; Chen, Jianwu ; Wu, Danyu ; Wu, Jin ; Jin, Zhi ; Liu, Xinyu
Author_Institution :
Microwave Devices & Integrated Circuits Dept., Inst. of Microelectron., Beijing, China
Abstract :
This paper presents the design method and implementation of a wide dynamic range transimpedance amplifier (TIA) with high gain-bandwidth product (GBW) based on 1μm GaAs process of WIN company. The wide dynamic range results from the utilization of a parallel feedback structure that divides the input current when it is large. And the high GBW owes to the limiting amplifier (LA) which functions as a gain stage based on a modified Cherry-Hopper amplifier. The proposed TIA achieves a maximum input current of 3.5 mA and a transimpedance of 68.6 dBΩ and a bandwidth of 10.9 GHz.
Keywords :
III-V semiconductors; gallium arsenide; limiters; operational amplifiers; optical communication equipment; optical links; Cherry-Hopper amplifier; GBW; GaAs; TIA; WIN company; bandwidth 10.9 GHz; bit rate 10 Gbit/s; current 3.5 mA; high gain-bandwidth product; limiting amplifier; optical link; parallel feedback structure; size 1 mum; wide dynamic range transimpedance amplifier; Bandwidth; Dynamic range; Gain; Limiting; Noise; Optical receivers; Resistors; Cherry-Hopper; Transimpedance amplifier (TIA); amplifier (LA); amplifier limiting; feedback;
Conference_Titel :
Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2012 International Workshop on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-1893-8
DOI :
10.1109/MMWCST.2012.6238125
