A novel high gain, high bandwidth CMOS differential front-end for wireless optical systems

Author

de Vasconcelos, Eduardo ; Cura, José L. ; Aguiar, Rui L. ; Santos, Dinis M.

Volume

4

fYear

1999

fDate

36342

Firstpage

431

Abstract

This paper describes a high performance CMOS differential input front-end, designed for optical wireless communications. The front-end achieves a 50 MHz bandwidth and a 400 kΩ transimpedance gain (20 THzΩ gain-bandwidth product) with the targeted input photodiode junction capacitance of 10 pF. The input dynamic range is 60 dB, obtained through a switched step gain approach, and the input referred noise is under 8.2 pA/√Hz. An integrated circuit has been produced using a double poly, double metal, 0.8 μm CMOS technology

Keywords

CMOS analogue integrated circuits; buffer circuits; differential amplifiers; feedback amplifiers; optical communication equipment; 0.8 micron; 10 pF; 50 MHz; CMOS differential front-end; double poly double metal CMOS technology; high bandwidth front-end; high gain front-end; input dynamic range; input photodiode junction capacitance; integrated circuit; switched step gain approach; wireless optical systems; Bandwidth; CMOS technology; Capacitance; Communication switching; Dynamic range; Integrated circuit noise; Optical design; Optical noise; Photodiodes; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.780034

Filename

780034