Title :
A 155Mbps limiting amplifier with offset compensation network and loss signal detection in 0.35μm CMOS technology
Author :
Lai, Fengchang ; Zhong, Yang ; Wang, Yongsheng ; Yu, Mingyan
Author_Institution :
Micro-Electron. Dept., Harbin Inst. of Technol., Harbin, China
Abstract :
A limiting amplifier for STM-1 systems of SDH optical communication in 0.35μm CMOS technology under 3.3V/5V supply voltage is presented. It adopts four cascaded differential amplifiers in a mixed structure of differential pairs and source followers which effectively expands the bandwidth. A DC offset compensation circuit is designed to compensate the mismatch caused by process manufacture and layout design. A loss signal detection circuit with the programmable threshold is integrated into the chip to decrease the power dissipation of the transmission systems. Under a supply voltage of 3.3V, it has a power consumption of 82mW. It obtains a 49.8dB gain with a bandwidth of 190MHz. With a wide input dynamic range of 40dB, it can contain a constant output swing of 980mV.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; optical communication; CMOS; DC offset compensation circuit; SDH optical communication; STM-1 systems; bandwidth 190 MHz; bit rate 155 Mbit/s; differential amplifiers; gain 49.8 dB; limiting amplifier; loss signal detection circuit; offset compensation network; power 82 mW; size 0.35 mum; transmission systems; voltage 3.3 V; voltage 5 V; voltage 980 mV; Bandwidth; CMOS integrated circuits; Indium phosphide; Layout; Limiting; Optical fiber amplifiers; Signal detection; DC offset compensation; limiting amplifier; loss signal detection;
Conference_Titel :
Optoelectronics and Microelectronics Technology (AISOMT), 2011 Academic International Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0794-0
DOI :
10.1109/AISMOT.2011.6159386
