Title :
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
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 ¿m CMOS technology, the preamplifier provides a transimpedance gain of 120 dB¿ and the current sensitivity of 500 pA, and achieves to reject the DC photocurrent with the range of 0 ¿A to 20 ¿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;
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
DOI :
10.1109/ASICON.2009.5351473
