| 单片集成CMOS光接收前端电路设计 |
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| 引用本文： | 刘帅锋,梁远军,李磊.单片集成CMOS光接收前端电路设计[J].微电子学与计算机,2011,28(3):99-102,107. |
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| 作者姓名： | 刘帅锋 梁远军 李磊 |
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| 作者单位： | 1. 中国科学院,深圳先进技术研究院,广东,深圳,518055;中国科学院,微电子研究所,北京,100029
2. 中国科学院,深圳先进技术研究院,广东,深圳,518055 |
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| 摘 要： | 文中采用SMIC 0.18μm CMOS工艺设计了适用于芯片间光互连的的接收机前端放大电路,将跨阻放大器(TIA)和限幅放大器(LA)集成于同一块芯片中.跨阻放大器采用调制型共源共栅(RGC)结构来提高其带宽,限幅放大器采用二阶有源反馈结构和有源电感负载来获得高的增益带宽积.整个接收机前端放大电路具有85dB中频增益,-3dB带宽为4.36GHz.芯片的面积为1mm×0.7mm,在1.8V电源电压下功耗为144mW.
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| 关 键 词： | 跨阻放大器 限幅放大器 二阶有源反馈 有源电感 |
Design of Monothic CMOS Optical Receiver Front-End Circuit |
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| LIU Shuai-feng,LIANG Yuan-jun,LI Lei.Design of Monothic CMOS Optical Receiver Front-End Circuit[J].Microelectronics & Computer,2011,28(3):99-102,107. |
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| Authors: | LIU Shuai-feng LIANG Yuan-jun LI Lei |
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| Affiliation: | LIU Shuai-feng1,2,LIANG Yuan-jun1,LI Lei1(1 Shenzhen Institute of Advanced Integration Technology,Chinese Academy of Sciences,Shenzhen 518055,China,2 Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | An optical receiver front-end circuit suitable for optical connect system was designed in a SMIC 0.18μm CMOS process.The transimpedance amplifier(TIA) and limiting amplifier(LA) are integrated in one chip.TIA uses regulated cascade(RGC) to boost bandwidth.LA uses second-order active feedback architecture and active inductor loads to improve the gain-bandwidth product(GBW).The circuit provides an overall gain of 85dB with a bandwidth of 4.36 GHz.The chip dissipates 144mW from a 1.8V supply with its area of 1.0×0.7mm2. |
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| Keywords: | transimpedance amplifier limiting amplifier second-order active feedback active inductor |
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