HittiteHMC876LC3C20Gbps时钟比较方案  2012/3/1

         Hittite 公司的HMC876LC3C是SiGe单片超快比较器,支持20 Gbps工作,时钟到输出的可编延迟为120ps, 最小脉冲宽度为60ps,输入带宽为10GHz,功耗为150mW,主要用在ATE,高速仪表,数字接收系统,高速触发电路和脉冲光谱仪.本文介绍了HMC876LC3C主要特性, 功能方框图, 应用电路图, 评估PCB布局图和评估PCB材料清单(BOM).

HMC876LC3C :20 Gbps Clocked COMPARATOR with RSECLOUTPUT STAGE

The HMC876LC3C is a SiGe monolithic, ultra fast comparator which features reduced swing ECL output drivers and clock inputs. The comparator supports 20 Gbps operation while providing 120 ps clock to data output delay and 60 ps minimum pulse width with 0.2 ps rms random jitter (RJ). 25 Gbps operation can be achieved with reduced output voltage swing. Overdrive and slew rate dispersion are typically 10 ps, making the device ideal for a wide range of applications from ATE to broadband communications. The reduced swing ECL output stage is designed to directly drive 400 mV into 50 Ohms terminated to -2V. The HMC876LC3C features high speed latches with programmable hysteresis, and is confi gured to operate as a clocked comparator.

HMC876LC3C主要特性:

Propagation Delay Clock to Output: 120 ps

Overdrive & Slew Rate Dispersion: 10 ps

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