共查询到20条相似文献,搜索用时 31 毫秒
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A 40 Gb/s clock and data recovery (CDR) module for a fiber‐optic receiver with improved phase‐locked loop (PLL) circuits has been successfully implemented. The PLL of the CDR module employs an improved D‐type flip‐flop frequency acquisition circuit, which helps to stabilize the CDR performance, to obtain faster frequency acquisition, and to reduce the time of recovering the lock state in the event of losing the lock state. The measured RMS jitter of the clock signal recovered from 40 Gb/s pseudo‐random binary sequence (231‐1) data by the improved PLL clock recovery module is 210 fs. The CDR module also integrates a 40 Gb/s D‐FF decision circuit, demonstrating that it can produce clean retimed data using the recovered clock. 相似文献
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An improved linear full-rate CMOS 10 Gb/s phase detector is proposed. The improved phase detector overcomes the difficulties
in realizing the full-rate operation by adding an I/Q splitter for the input data. Such a topology enlarges the pulse width
of output signals to ease the full clock rate operation and the problem of the half period skew in the whole clock data recovery
system. The proposed topology is able to provide a good linearity over a wider operating range of input phase offset compared
to that of existing designs. The phase detector using the Chartered 0.18 μ m CMOS process is capable of operating up to a
10 GHz clock rate and 10 Gb/s input data for a 1.8 V supply voltage with 31 mW power consumption. 相似文献
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利用TSMC的O.18μm CMOS工艺,设计实现了单片集成的5 Gb/s锁相环型时钟恢复电路。该电路采用由半速率鉴相器、四相位环形电流控制振荡器、电荷泵以及环路滤波器组成的半速率锁相环结构。测试表明:在输入速率为5 Gb/s、长度为211-1伪随机序列的情况下,恢复出时钟的均方根抖动为4.7 ps。在偏离中心频率6MHz频率处的单边带相位噪声为-112.3 dBe/Hz。芯片面积仅为0.6mm×O.6 mm,采用1.8 V电源供电,功耗低于90 mW。 相似文献
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设计了一个使用0.13μm CMOS工艺制造的低电压低功耗串行接收器。它的核心电路工作电压为1V,工作频率范围从2.5 GHz到5 GHz。接收器包括两个1:20的解串器、一个输入信号预放大器以及时钟恢复电路。在输入信号预放大器中设计了一个简单新颖的电路,利用前馈均衡来进一步消除信号的码间串扰,提高接收器的灵敏度。测试表明,接收器功耗45 mW。接收器输入信号眼图闭合0.5UI,信号差分峰-峰值150 mV条件下误码率小于10~(-12)。接收器还包含了时钟数据恢复电路,其中的相位插值器通过改进编码方式,使得输出信号的幅度能够保持恒定,并且相位具有良好的线性度。 相似文献
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This paper presents a clock and data recovery circuit that supports dual data rates of 5.4 Gbps and 3.24 Gbps for DisplayPort v1.2 sink device. A quarter‐rate linear phase detector (PD) is used in order to mitigate high speed circuit design effort. The proposed linear PD results in better jitter performance by increasing up and down pulse widths of the PD and removes dead‐zone problem of charge pump circuit. A voltage‐controlled oscillator is designed with a ‘Mode’ switching control for frequency selection. The measured RMS jitter of recovered clock signal is 2.92 ps, and the peak‐to‐peak jitter is 24.89 ps under 231–1 bit‐long pseudo‐random bit sequence at the bitrate of 5.4 Gbps. The chip area is 1.0 mm×1.3 mm, and the power consumption is 117 mW from a 1.8 V supply using 0.18 μm CMOS process. 相似文献
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利用法国OMM IC公司的0.2μm G aA s PHEM T工艺,设计实现了10 G b/s NRZ码时钟信息提取电路。该电路采用改进型双平衡G ilbert单元的结构,引进了容性源极耦合差动电流放大器和调谐负载电路,大大提高了电路的性能。测试表明:在输入速率为9.953 28 G b/s长度为223-1伪随机序列的情况下,提取出的时钟的均方根抖动是1.18 ps,峰峰值抖动是8.44 ps。芯片面积为0.5 mm×1 mm,采用-5 V电源供电,功耗约为100 mW。 相似文献
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ZHANGCheng-an SONGQi-feng WANGZhi-gong 《半导体光子学与技术》2004,10(4):233-236
A low--power and high--speed 16.-1 MUX IC designed for optical fiber communication based on TSMC 0.25μm CMOS technology is presented. A tree—type architecture was utilized. The output data bit rate is 2.5 Gb/s at input clock rate of 1.25 GHz. The simulation results show that the output signal has peak—to—peak amplitude of 400 mV, the power dissipation is less than 200 mW and the power dissipation of core circuit is less than 20 mW at the 2.5 Gb/s standard bit rate and supply voltage of 2.5 V. The chip area is 1.8mm^2. 相似文献
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A low-power and high-speed 16:1 MUX IC designed for optical fiber communication based on TSMC 0.25 μm CMOS technology is presented. A tree-type architecture was utilized. The output data bit rate is 2.5 Gb/s at input clock rate of 1.25 GHz. The simulation results show that the output signal has peak-to-peak amplitude of 400 mV, the power dissipation is less than 200 mW and the power dissipation of core circuit is less than 20 mW at the 2.5 Gb/s standard bit rate and supply voltage of 2.5 V. The chip area is 1.8 mm2. 相似文献
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Jong‐Min Lee Byoung‐Gue Min Seong‐Il Kim Kyung Ho Lee Hae Cheon Kim 《ETRI Journal》2009,31(6):749-754
The design and performance of an InGaAs/InP transimpedance amplifier and post amplifier for 40 Gb/s receiver applications are presented. We fabricated the 40 Gb/s transimpedance amplifier and post amplifier using InGaAs/InP heterojunction bipolar transistor (HBT) technology. The developed InGaAs/InP HBTs show a cut‐off frequency (fT) of 129 GHz and a maximum oscillation frequency (fmax) of 175 GHz. The developed transimpedance amplifier provides a bandwidth of 33.5 GHz and a gain of 40.1 dBΩ. A 40 Gb/s data clean eye with 146 mV amplitude of the transimpedance amplifier module is achieved. The fabricated post amplifier demonstrates a very wide bandwidth of 36 GHz and a gain of 20.2 dB. The post‐amplifier module was fabricated using a Teflon PCB substrate and shows a good eye opening and an output voltage swing above 520 mV. 相似文献
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《Solid-State Circuits, IEEE Journal of》2009,44(3):775-783
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设计了一款工作速率为1.25~3.125 Gb/s的连续可调时钟数据恢复(CDR)电路,可以满足多种通信标准的设计需求.CDR采用相位插值型双环路结构,使系统可以根据应用需求对抖动抑制和相位跟踪能力独立进行优化.针对低功耗和低噪声的需求,提出一种新型半速率采样判决电路,利用电流共享和节点电容充放电技术,数据速率为3.125 Gb/s时,仅需要消耗50 μA电流.芯片采用0.13 μm工艺流片验证,面积0.42 m㎡,功耗98 mw,测试结果表明,时钟数据恢复电路接收PRBS7序列时,误码率小于10-12. 相似文献
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Zhihao Lao Langmann U. Albers J.N. Schlag E. Clawin D. 《Solid-State Circuits, IEEE Journal of》1996,31(1):54-60
A 1:4-demultiplexer IC meeting the essential requirements for lightwave communication systems has been designed based on a 21 GHz f T 0.4 μm Si bipolar process. The circuit provides features such as bit-rotation control, clock enable control, outputs aligned in time, and phase aligner for clock signals. It operates up to 14 Gb/s (14 GHz) with a phase margin of ⩾250°. The power consumption is 2 W with a -4.5 V supply. 1:16-demultiplexer operation is demonstrated on the basis of 1:4-demultiplexer IC's at 10 Gb/s 相似文献
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介绍了利用0.18μmCMOS工艺实现了应用于光纤传输系统SDHSTM-64级别的时钟和数据恢复电路。采用了电荷泵锁相环(CPPLL)结构,CPPLL中的鉴相器能够鉴测相位产生超前滞后逻辑,采样数据具有1∶2分接的功能。振荡器采用全集成LC压控振荡器,鉴相器采用半速率的结构。对应于10Gb/s的PRBS数据(231-1),恢复出的5GHz时钟的相位噪声为-112dBc/Hz@1MHz,同时10Gb/s的PRBS数据分接出两路5Gb/s数据。芯片面积仅为1.00mm×0.8mm,电源电压1.8V时功耗为158mW。 相似文献
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A novel linear switched termination active cross‐coupled low‐voltage differential signaling (LVDS) transceiver operating at 1.5 GHz clock frequency is presented. On the transmitter side, an active cross‐coupled linear output driver and a switched termination scheme are applied to achieve high speed with low current. On the receiver side, a shared preamplifier scheme is employed to reduce power consumption. The proposed LVDS transceiver implemented in an 80 nm CMOS process is successfully demonstrated to provide a data rate of 6 Gbps/pin, an output data window of 147 ps peak‐to‐peak, and a data swing of 196 mV. The power consumption is measured to be 4.2 mW/pin at 1.2 V. 相似文献
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Krishnamurthy K. Chow J. Mensa D. Pullela R. 《Microwave and Wireless Components Letters, IEEE》2004,14(1):28-30
Packaged master-slave D-flip-flops designed in InP DHBT technology with 150 GHz f/sub t/ and 180 GHz f/sub max/ are presented. Measurement results using a 43.2 Gb/s nonreturn to zero (NRZ), pseudo random binary sequence (PRBS) data (generated from 4 channels of 10.8 Gb/s, 2/sup 31/-1, PRBS data) and a 43.2 GHz clock, show a clock phase margin of 190/spl deg/. 2:1 Static frequency dividers designed using the D-flip-flops have been tested up to 50 GHz and show normal operation. These circuits are key building blocks in numerous front-end circuits used for 40 Gb/s optical communication systems. 相似文献