A single power supply common-gate （CG） current mode transimpedance preamplifier （TIA） is developed with a 0.5μm GaAs PHEMT process. The amplifier has a measured - 3dB bandwidth of 7. 5GHz and a transimpedance gai...A single power supply common-gate （CG） current mode transimpedance preamplifier （TIA） is developed with a 0.5μm GaAs PHEMT process. The amplifier has a measured - 3dB bandwidth of 7. 5GHz and a transimpedance gain of 45dBΩ. Both the input and output voltage standing wave ratios （VSWR） are less than 2 within the bandwidth. The equivalent input noise current spectral density varies from 14.3 to 22pA/√Hz, with an average value of 17. 2pA/√Hz. Having a timing jitter of 14ps and eye amplitude of about 138mV,the measured output eye diagram for 10Gb/s NRZ pseudorandom binary sequence （PRBS） is clear and satisfactory.展开更多
A 10 Gb/s OEIC（optoelectronic integrated circuit）optical receiver front-end has been studied and fabricated based on theφ-76 mm GaAs PHEMT process;this is the first time that a limiting amplifier（LA）has been desi...A 10 Gb/s OEIC（optoelectronic integrated circuit）optical receiver front-end has been studied and fabricated based on theφ-76 mm GaAs PHEMT process;this is the first time that a limiting amplifier（LA）has been designed and realized using depletion mode PHEMT.An OEIC optical receiver front-end mode composed of an MSM photodiode and a current mode transimpedance amplifier（TIA）has been established and optimized by simu- lation software ATLAS.The photodiode has a bandwidth of 10 GHz,a capacitance of 3 fF/μm and a photosensitive area of 50×50μm^2.The whole chip has an area of 1511×666μm^2.The LA bandwidth is expanded by spiral inductance which has been simulated by software HFSS.The chip area is 1950×1910μm^2 and the measured results demonstrate an input dynamic range of 34 dB（10–500 mVpp）with constant output swing of 500 mVpp.展开更多
文摘A single power supply common-gate （CG） current mode transimpedance preamplifier （TIA） is developed with a 0.5μm GaAs PHEMT process. The amplifier has a measured - 3dB bandwidth of 7. 5GHz and a transimpedance gain of 45dBΩ. Both the input and output voltage standing wave ratios （VSWR） are less than 2 within the bandwidth. The equivalent input noise current spectral density varies from 14.3 to 22pA/√Hz, with an average value of 17. 2pA/√Hz. Having a timing jitter of 14ps and eye amplitude of about 138mV,the measured output eye diagram for 10Gb/s NRZ pseudorandom binary sequence （PRBS） is clear and satisfactory.
基金supported by the National Key Laboratory of Monolithic Integrated Circuits and Modules Foundation of China(No.9140C1406020708)
文摘A 10 Gb/s OEIC（optoelectronic integrated circuit）optical receiver front-end has been studied and fabricated based on theφ-76 mm GaAs PHEMT process;this is the first time that a limiting amplifier（LA）has been designed and realized using depletion mode PHEMT.An OEIC optical receiver front-end mode composed of an MSM photodiode and a current mode transimpedance amplifier（TIA）has been established and optimized by simu- lation software ATLAS.The photodiode has a bandwidth of 10 GHz,a capacitance of 3 fF/μm and a photosensitive area of 50×50μm^2.The whole chip has an area of 1511×666μm^2.The LA bandwidth is expanded by spiral inductance which has been simulated by software HFSS.The chip area is 1950×1910μm^2 and the measured results demonstrate an input dynamic range of 34 dB（10–500 mVpp）with constant output swing of 500 mVpp.
