Title :
10-Gb/s high-density trans-impedance amplifier in 0.18-μm CMOS
Author :
Wang, Xiao-Xia ; Wang, Zhi-Gong ; Liu, Ji-Shun ; Lei, Xue-Mei
Author_Institution :
Inst. of RF-& OE-ICs, Southeast Univ., Nanjing, China
Abstract :
In this work, a pseudo-differential trans-impedance amplifier (TIA) was designed in a 0.18-¿m CMOS technology. To make it utilized in short-distance, high-density multi-channel optical communication system, modified regulated cascade (MRGC) input configuration and active inductances were exploited to broaden the bandwidth without bringing much penalty to the power consumption and the chip area. The circuit occupies a chip area of 75 ¿m × 80 ¿m. Post-layout simulations demonstrated that a single channel TIA can achieve a trans-impedance of 51.87 dBQ, a bandwidth of 8.5 GHz for 0.3 pF photodiode capacitance. The power consumption is 19 mW.
Keywords :
CMOS integrated circuits; operational amplifiers; optical communication; photodiodes; CMOS technology; active inductances; bandwidth 8.5 GHz; bit rate 10 Gbit/s; capacitance 0.3 pF; high-density trans-impedance amplifier; modified regulated cascade input configuration; photodiode capacitance; post-layout simulations; power 19 mW; pseudodifferential trans-impedance amplifier; short-distance high-density multichannel optical communication system; single-channel TIA; size 0.18 mum; size 75 mum; size 80 mum; Bandwidth; CMOS technology; Circuit analysis; Energy consumption; Equivalent circuits; Optical amplifiers; Optical feedback; Optical fiber communication; Optical receivers; Parasitic capacitance; active inductance; optical communication; regulated cascade; trans-impedance amplifier;
Conference_Titel :
Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4856-2
Electronic_ISBN :
978-1-4244-5668-0
DOI :
10.1109/WCSP.2009.5371516
