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514RCAXXXXXXBAGR PDF预览

514RCAXXXXXXBAGR

更新时间: 2024-11-07 07:07:59
品牌 Logo 应用领域
芯科 - SILICON 光电二极管
页数 文件大小 规格书
32页 267K
描述
Clock Generator, 250MHz, CMOS, PDSO6, 3.20 X 5 MM, ROHS COMPLIANT PACKAGE-6

514RCAXXXXXXBAGR 数据手册

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Si514  
2
ANY-FREQUENCY I C PROGRAMMABLE XO (100 kHZ TO 250 MHZ)  
Features  
Programmable to any frequency  
from 100 kHz to 250 MHz  
0.026 ppb frequency tuning  
resolution  
Glitch suppression on OE, power  
on and frequency transitions  
1 ps phase jitter (rms, max)  
2- to 4-week lead times  
Total stability includes 10-year  
aging  
On-chip LDO for power supply  
noise filtering  
3.3, 2.5, or 1.8 V operation  
Differential (LVPECL, LVDS,  
HCSL) or CMOS output options  
Optional integrated 1:2 CMOS  
fanout buffer  
Ordering Information:  
Industry standard 5 x 7 and  
See page 25.  
3.2 x 5 mm packages  
o
–40 to 85 C operation  
Comprehensive production test  
coverage includes crystal ESR and  
DLD  
Pin Assignments:  
See page 24.  
Applications  
All-digital PLLs  
Datacom  
VDD  
1
2
3
6
5
4
SDA  
SCL  
GND  
DAC+ VCXO replacement  
SONET/SDH/OTN  
3G-SDI/HD-SDI/SDI  
Industrial automation  
FPGA/ASIC clock generation  
FPGA synchronization  
CLK–  
CLK+  
Description  
2
The Si514 user-programmable I C XO utilizes Silicon Laboratories' advanced PLL  
technology to provide any frequency from 100 kHz to 250 MHz with programming  
resolution of 0.026 parts per billion. The Si514 uses a single integrated crystal and  
Silicon Labs’ proprietary DSPLL synthesizer to generate any frequency across this  
2
range using simple I C commands. Ultra-fine tuning resolution replaces DACs and  
VCXOs with an all-digital PLL solution that improves performance where  
synchronization is necessary or in free-running reference clock applications. This  
solution provides superior supply noise rejection, simplifying low jitter clock  
generation in noisy environments. Crystal ESR and DLD are individually  
production-tested to guarantee performance and enhance reliability.  
The Si514 is factory-configurable for a wide variety of user specifications, including  
2
startup frequency, I C address, supply voltage, output format, and stability. Specific  
configurations are factory-programmed at time of shipment, eliminating long lead  
times and non-recurring engineering charges associated with custom frequency  
oscillators.  
Functional Block Diagram  
Preliminary Rev. 0.9 3/11  
Copyright © 2011 by Silicon Laboratories  
Si514  

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