| A 3.125-Gb/s inductorless transimpedance amplifier for optical communication in 0.35μm CMOS |
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| 引用本文： | 徐晖,冯军,刘全,李伟.A 3.125-Gb/s inductorless transimpedance amplifier for optical communication in 0.35μm CMOS[J].半导体学报,2011,32(10):97-102. |
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| 作者姓名： | 徐晖 冯军 刘全 李伟 |
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| 作者单位： | Institute of RF-& OE-ICs;Southeast University; |
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| 基金项目： | Project supported by the National High Technology Research and Development Program of China(No.2006AA012284) |
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| 摘 要： | A 3.125-Gb/s transimpedance amplifier(TIA) for an optical communication system is realized in 0.35μm CMOS technology.The proposed TIA employs a regulated cascode configuration as the input stage, and adopts DC-cancellation techniques to stabilize the DC operating point.In addition,noise optimization is processed. The on-wafer measurement results show the transimpedance gain of 54.2 dBΩand -3 dB bandwidth of 2.31 GHz.The measured average input referred noise current spectral density is about 18.8 pA/(?).The measured eye diagram is clear and symmetrical for 2.5-Gb/s and 3.125-Gb/s PRBS.Under a single 3.3-V supply voltage,the TIA consumes only 58.08 mW,including 20 mW from the output buffer.The whole die area is 465×435μm~2.
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| 关 键 词： | pre-amplifier CMOS technology RGC input stage DC-cancellation low power dissipation |
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