Silabs Si54x系列超低抖动高性能晶振解决方案

Silabs公司的Si54x系列是采用第四代DSPLL技术的超低抖动高性能晶体振荡器,频率范围从0.2-1500MHz,分辨率小于1ppb,具有极好的PSRR,电源抗噪度-80dBc,稳定度3倍于SAW振荡器,工作电压3.3V,2.5V和1.8V,输出格式包括LVPECL, LVDS, CML, HCSL, CMOS和双CMOS输出,主要用在100G/200G/400G OTN,相干光学,10G/40G/100G光学以太网,3G-SDI/12G-SDI/24G-SDI广播视频,数据中心,测量和测试,时钟和数据恢复,FPGA/ASIC时钟.本文介绍了Si54x系列主要特性,功能框图,通用振荡器评估板Si5xxUC-EVB主要特性,框图和电路图.
The Si545 Ultra Series™ oscillator utilizes Silicon Laboratories’advanced 4th generation DSPLL® technology to provide an ultra-low jitter, low phase noise clock at anyoutput frequency. The device is factory-programmed to any frequency from 0.2 to1500 MHz with <1 ppb resolution and maintains exceptionally low jitter for both integerand fractional frequencies across its operating range. The Si545 offers excellentreliability and frequency stability as well as guaranteed aging performance. On-chippower supply filtering provides industry-leading power supply noise rejection,simplifyingthe task of generating low jitter clocks in noisy systems that use switched-modepower supplies. Offered in industry-standard 3.2x5 mm and 5x7 mm footprints, theSi545 has a dramatically simplified supply chain that enables Silicon Labs to ship customfrequency samples 1-2 weeks after receipt of order. Unlike a traditional XO,where a different crystal is required for each output frequency, the Si545 uses onesimple crystal and a DSPLL IC-based approach to provide the desired output frequency.
This process also guarantees 100% electrical testing of every device. The Si545 isfactory-configurable for a wide variety of user specifications, including frequency, output format, and OE pin location/polarity. Specific configurations are factory-programmedat time of shipment, eliminating the long lead times associated with custom oscillators.
Si54x系列主要特性:
• Available with any frequency from 0....