Title :
Design of a 2.5 Gbps CMOS trans-impedance amplifier (TIA) for optical communication
Author :
Lee, Jong Hwa ; Jeong, Seon I. ; Cho, Sang Bock ; Park, Sung Min
Author_Institution :
Dept. of Electr. Eng., Ulsan Univ., South Korea
fDate :
26 June-3 July 2004
Abstract :
A wide band CMOS trans-impedance amplifier (TIA) was designed for optical receiver application. This amplifier implemented in a 0.25-μm digital CMOS process can be characterized with a transimpedance gain of 55.9 dBΩ at 2.08 GHz -3 dB bandwidth, while dissipating 18.75 mW with 2.5 V supply. The bandwidth can be extended by inductive peaking technique using active inductor and trans-conductance (gm) enhancement technique. In single-ended stage, the TIA without buffer in feedback path provides good loop gain and higher input and output resistances in comparison with the TIA with buffer in feedback path. The core circuit of the designed TIA occupies a chip area of 46 μm × 50 μm only.
Keywords :
CMOS digital integrated circuits; amplifiers; electric admittance; electric impedance; feedback; inductors; integrated circuit design; optical receivers; -3 dB; 0.25 mum; 18.75 mW; 2.08 GHz; 2.5 V; 55.9 dB; CMOS design; active inductor; digital CMOS process; feedback path; inductive peaking technique; optical communication; optical receiver; transconductance enhancement technique; transimpedance amplifier; Active inductors; Bandwidth; CMOS process; Feedback loop; Optical amplifiers; Optical design; Optical fiber communication; Optical receivers; Output feedback; Semiconductor optical amplifiers;
Conference_Titel :
Science and Technology, 2004. KORUS 2004. Proceedings. The 8th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8383-4
DOI :
10.1109/KORUS.2004.1555329
