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首页> 外文期刊>IEEE Journal of Solid-State Circuits >40-Gb/s circuits built from a 120-GHz fT SiGe technology
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40-Gb/s circuits built from a 120-GHz fT SiGe technology

机译:采用120 GHz fT SiGe技术构建的40 Gb / s电路

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Product designs for 40-Gb/s applications fabricated from SiGe BiCMOS technologies are now becoming available. In this paper we first briefly discuss heterojunction bipolar transistor (HBT) device operation at high speed, demonstrating that perceived concerns regarding lower BVCEO and higher current densities required to operate silicon HBTs at such high speeds do not in actuality limit design or performance. The high-speed portions of the 40-Gb/s system are then addressed individually. We demonstrate the digital capability through a 4: 1 multiplexer and a 1 : 4 demultiplexer running over 50 Gb/s error free at a -3.3-V power supply. We also demonstrate a range of analog elements, including a lumped limiting amplifier which operates with a 35-GHz bandwidth, a transimpedance amplifier with 220-Ω gain and 49.1-GHz bandwidth, a 21.5-GHz voltage-controlled oscillator with over -100-dBc/Hz phase noise at 1-MHz offset, and a modulator driver which runs a voltage swing twice the BVCEO of the high-speed SiGe HBT. These parts demonstrate substantial results toward product offerings, on each of the critical high-speed elements of the 40-Gb/s system.
机译:现在可以使用SiGe BiCMOS技术制造的用于40 Gb / s应用的产品设计。在本文中,我们首先简要讨论了异质结双极晶体管(HBT)器件在高速下的运行情况,证明了人们对以如此高的速度运行硅HBT所需的更低的BVCEO和更高的电流密度的担忧实际上并不限制设计或性能。然后分别解决40 Gb / s系统的高速部分。我们通过一个4:1多路复用器和一个1:4多路分离器在-3.3-V电源下以超过50 Gb / s的速度无故障运行来证明其数字能力。我们还演示了一系列模拟元件,包括以35 GHz带宽工作的集总限幅放大器,具有220Ω增益和49.1 GHz带宽的互阻放大器,具有超过-100-V的21.5 GHz压控振荡器。偏移为1MHz时的dBc / Hz相位噪声,以及一个调制器驱动器,其电压摆幅是高速SiGe HBT的BVCEO的两倍。这些零件在40 Gb / s系统的每个关键高速元件上都展示了产品提供的实质性成果。

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