Title :
A 0.18µm CMOS 2.5Gbps pre-amplifier with AGC
Author_Institution :
XIAMEN UX HIGH-SPEED IC Co., Ltd., Xiamen, China
Abstract :
A 2.5Gbps pre-amplifier for OC-48 / GPON optical fiber communication application is implemented in 0.18μm Mixed Signal CMOS process. The pre-amplifier utilities RGC structure as input buffer stage, shunt-shunt feedback structure as trans-impedance amplifier, and employs active inductive peaking and source degeneration technologies to extend bandwidth, builds in AGC block to extend the input dynamic range. The simulation results show that, the differential gain is 6Kohm, the bandwidth is 2GHz; the practical test results of the chip show that, the optical input sensitivity is about -26dBm under a BER of 10-10, and the overload optical input is 3dBm. The chip is powered by a single 3.3V supply, and the static power dissipation is only 66mW.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; automatic gain control; mixed analogue-digital integrated circuits; passive optical networks; preamplifiers; AGC block; BER; CMOS pre-amplifier; OC-48-GPON optical fiber communication application; RGC structure; active inductive peaking technology; bandwidth 2 GHz; bit rate 2.5 Gbit/s; input buffer stage; mixed signal CMOS processing; optical input sensitivity; overload optical input; power 66 mW; resistance 6 kohm; shunt-shunt feedback structure; size 0.18 mum; source degeneration technology; static power dissipation; trans-impedance amplifier; voltage 3.3 V; CMOS integrated circuits; Integrated optics; Optical sensors; Resistors; Silicon; 0.18µm CMOS; AGC; Pre-Amplifier; RGC; active inductive; source degeneration;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157386
