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

Volume

1

fYear

2004

fDate

26 June-3 July 2004

Firstpage

229

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Science and Technology, 2004. KORUS 2004. Proceedings. The 8th Russian-Korean International Symposium on

Print_ISBN

0-7803-8383-4

Type

conf

DOI

10.1109/KORUS.2004.1555329

Filename

1555329