Title :
A 1.8V, 60dB/spl Omega/ 11 GHz transimpedance amplifier with strong immunity to input parasitic capacitance
Author :
Sim, Su-Jeong ; Park, Jeongmin ; Park, Sung Min
Author_Institution :
Dept. of Inf. Electron. Eng., Ewha Womans Univ., Seoul
Abstract :
A wideband differential transimpedance amplifier of an optical receiver is realized in a 0.18mum standard CMOS technology for the applications of Gigabit Ethernet data communication. The amplifier incorporates the regulated cascode (RGC) configuration to achieve strong immunity to large input parasitic capacitance and also exploits shunt inductive peaking technique to extend the bandwidth. Consequently, the RGC TIA has negligible effect on bandwidth from the large variation of photodiode capacitance. HSPICE simulations demonstrate the transimpedance gain of 60dBOmega, the -3dB bandwidth of 11GHz for 0.25pF photodiode capacitance, the average noise current spectral density of 18 pA/radicHz which corresponds to -14.4dBm optical sensitivity for 0.5A/W responsivity and 9dB extinction ration, and the DC power dissipation of 22mW from a single 1.8V supply
Keywords :
CMOS integrated circuits; differential amplifiers; local area networks; microwave amplifiers; optical receivers; wideband amplifiers; 0.18 micron; 0.25 pF; 1.8 V; 11 GHz; 22 mW; CMOS technology; HSPICE simulations; differential amplifier; gigabit Ethernet data communication; noise current spectral density; optical receiver; parasitic capacitance; photodiode capacitance; regulated cascode configuration; shunt inductive peaking; transimpedance amplifier; transimpedance gain; wideband amplifier; Bandwidth; Broadband amplifiers; CMOS technology; Communication standards; Differential amplifiers; Optical amplifiers; Optical receivers; Parasitic capacitance; Photodiodes; Semiconductor optical amplifiers;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693875
