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HittiteHMC876LC3C20Gbps時(shí)鐘比較方案  2012/3/1

         Hittite 公司的HMC876LC3C是SiGe單片超快比較器,支持20 Gbps工作,時(shí)鐘到輸出的可編延遲為120ps, 最小脈沖寬度為60ps,輸入帶寬為10GHz,功耗為150mW,主要用在ATE,高速儀表,數(shù)字接收系統(tǒng),高速觸發(fā)電路和脈沖光譜儀.本文介紹了HMC876LC3C主要特性, 功能方框圖, 應(yīng)用電路圖, 評(píng)估PCB布局圖和評(píng)估PCB材料清單(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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