| Citation: |
Xue Zhaofeng, Li Zhiqun, Wang Zhigong, Xiong Mingzhen, Li Wei. A Low Noise,1.25Gb/s Front-End Amplifier for Optical Receivers[J]. Journal of Semiconductors, 2006, In Press.
Xue Z F, Li Z Q, Wang Z G, Xiong M Z, Li W. A Low Noise,1.25Gb/s Front-End Amplifier for Optical Receivers[J]. Chin. J. Semicond., 2006, 27(8): 1373.
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A Low Noise,1.25Gb/s Front-End Amplifier for Optical Receivers
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Abstract
This paper presents a low noise,1.25Gb/s and 124dBΩ front-end amplifier that is designed and fabricated in 0.25μm CMOS technology for optical communication applications.Active inductor shunt peaking technology and noise optimization are used in the design of a trans-impedance amplifier,which overcomes the problem of inadequate bandwidth caused by the large parasitical capacitor of the CMOS photodiode.Experimental results indicate that with a parasitical capacitance of 2pF,this circuit works at 1.25Gb/s.A clear eye diagram is obtained with an input optical signal of -17dBm.With a power supply of 3.3V,the front-end amplifier consumes 122mW and provides a 660mV differential output.-
Keywords:
- front-end amplifier,
- TIA,
- shunt peaking,
- active inductor
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References
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