DC photocurrent rejection of high transimpedance gain preamplifier in infrared wireless optical receiver

Author

Sheng, Wang Yong ; Li, Xu ; Chang, Lai Feng

Author_Institution

Microelectron. Center, Harbin Inst. of Technol., Harbin, China

fYear

2009

fDate

20-23 Oct. 2009

Firstpage

250

Lastpage

253

Abstract

A high gain transimpedance preamplifier in the infrared wireless optical receiver is presented. Employing an active inductor as the active cancellation scheme, a novel DC photocurrent rejection technique of a transimpedance amplifier (TIA) is designed to eliminate DC photocurrent generated by ambient light. Implemented in Chartered 0.35 Â¿m CMOS technology, the preamplifier provides a transimpedance gain of 120 dBÂ¿ and the current sensitivity of 500 pA, and achieves to reject the DC photocurrent with the range of 0 Â¿A to 20 Â¿A. Operating under a 3.3 V supply, the power dissipation is 0.6 mW.

Keywords

CMOS integrated circuits; integrated optoelectronics; operational amplifiers; optical fibre amplifiers; optical receivers; photoconductivity; preamplifiers; DC photocurrent rejection technique; active cancellation scheme; chartered CMOS technology; current 0 muA to 20 muA; current 500 A; current sensitivity; high transimpedance gain preamplifier; infrared wireless optical receiver; power 0.6 mW; size 0.35 mum; voltage 3.3 V; Active inductors; Gyrators; Impedance; Optical amplifiers; Optical fiber communication; Optical receivers; Photoconductivity; Preamplifiers; Voltage; Wireless communication; active inductor; dc photocurrent rejection; infrared wireless optical receiver; transimpedance amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2009. ASICON '09. IEEE 8th International Conference on

Conference_Location

Changsha, Hunan

Print_ISBN

978-1-4244-3868-6

Electronic_ISBN

978-1-4244-3870-9

Type

conf

DOI

10.1109/ASICON.2009.5351473

Filename

5351473