[原创] Silabs Si549Ultra Series第四代振荡器解决方案

Silabs公司的Si549是Ultra Series振荡器是采用第四代DSPLL技术,在任何输出频率都具有超低抖动和低相位噪音,通过I2C指令用户可进行编程,频率从0.2MHz到1500MHz,分辨率优于1ppb,3.3V,2.5V和1.8V VDD电源,输出格式包括LVPECL,LVDS,CML,HCSL,CMOS和双路CMOS,主要用在100G/200G/400G OTN,相干光学,PAM4,10G/40G/100G光以太网,3G-SDI/12G-SDI/24G-SDI广播视频,服务器,交换,存储和搜索加速器,测试测量以及FPGA/ASIC时钟.本文介绍了Si549主要特性,框图,通用评估板Si5xxUC-EVB主要特性,框图和电路图.

The Si549 Ultra Series™ oscillator utilizes Silicon Laboratories’advanced 4thgeneration DSPLL® technology to provide an ultra-low jitter, low phase noiseclock at any output frequency. The device is user-programmed via simpleI2C commands to provide any frequency from 0.2 to 1500 MHz with <1 ppbresolution and maintains exceptionally low jitter for both integer and fractionalfrequencies across its operating range. The Si549 offers excellent reliabilityand frequency stability as well as guaranteed aging performance. On-chippower supply filtering provides industry-leading power supply noise rejection,simplifying the task of generating low jitter clocks in noisy systems that useswitched-mode power supplies.
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