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843252AGLFT PDF预览

843252AGLFT

更新时间: 2024-11-04 01:12:59
品牌 Logo 应用领域
艾迪悌 - IDT 时钟光电二极管外围集成电路晶体
页数 文件大小 规格书
17页 382K
描述
FemtoClock Crystal-to- 3.3V LVPECL Frequency Synthesizer

843252AGLFT 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:TSSOP
包装说明:TSSOP, TSSOP16,.25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.3
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:5 mm湿度敏感等级:1
端子数量:16最高工作温度:70 °C
最低工作温度:最大输出时钟频率:680 MHz
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:3.3 V主时钟/晶体标称频率:27.2 MHz
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Clock Generators最大供电电压:3.465 V
最小供电电压:3.135 V标称供电电压:3.3 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:Matte Tin (Sn) - annealed
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4.4 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

843252AGLFT 数据手册

 浏览型号843252AGLFT的Datasheet PDF文件第2页浏览型号843252AGLFT的Datasheet PDF文件第3页浏览型号843252AGLFT的Datasheet PDF文件第4页浏览型号843252AGLFT的Datasheet PDF文件第5页浏览型号843252AGLFT的Datasheet PDF文件第6页浏览型号843252AGLFT的Datasheet PDF文件第7页 
FemtoClock® Crystal-to- 3.3V LVPECL  
Frequency Synthesizer  
843252  
Datasheet  
General Description  
Features  
The 843252 is a 2 differential output LVPECL Synthesizer designed  
to generate Ethernet reference clock frequencies. Using a 25MHz,  
18pF parallel resonant crystal, the following frequencies can be  
generated based on the settings of 4 frequency select pins  
(SELA[1:0], SELB[1:0]): 625MHz, 312.5MHz, 156.25MHz, and  
125MHz.  
Two differential LVPECL output pairs  
Using a 25MHz crystal, the two output banks can be  
independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz  
Crystal oscillator interface  
VCO frequency: 490MHz – 680MHz  
RMS Phase Jitter @ 156.25MHz, (1.875MHz – 20MHz) using a  
The two banks have their own dedicated frequency select pins and  
can be independently set for the frequencies mentioned above. The  
843252 IDT’s 3rd generation low phase noise VCO technology and  
can achieve 1ps or lower typical rms phase jitter, easily meeting  
Ethernet jitter requirements. The 843252 is packaged in a small  
16-pin TSSOP package.  
25MHz crystal: 0.47ps (typical)  
Full 3.3V supply mode  
0°C to 70°C ambient operating temperature  
Industrial temperature available upon request  
Available in lead-free (RoHS 6) package  
Pin Assignment  
Block Diagram  
2
Pullup  
nQB  
QB  
1
2
3
4
5
6
7
8
16 XTAL_IN  
SELA[0:1]  
15  
14  
13  
12  
11  
10  
9
XTAL_OUT  
VEE  
0 0 ÷1  
0 1 ÷2  
1 0 ÷3  
1 1 ÷4 (default)  
VCCO_B  
SELB1  
SELB0  
VCCO_A  
QA  
QA  
SELA1  
SELA0  
VCC  
nQA  
XTAL_IN  
XTAL_OUT  
Phase  
Detector  
VCO  
OSC  
490MHz - 680MHz  
0 0 ÷2  
0 1 ÷4  
1 0 ÷5  
QB  
VCCA  
nQA  
FB_SEL  
nQB  
1 1 ÷8 (default)  
Feedback Divider  
0 = ÷25 (default)  
1 = ÷32  
843252  
16-Lead TSSOP  
4.4mm x 5.0mm x 0.925mm package body  
G Package  
Pulldown  
Pullup  
FB_SEL  
SELB[0:1]  
2
©2016 Integrated Device Technology, Inc.  
1
Revision B, January 20, 2016  

843252AGLFT 替代型号

型号 品牌 替代类型 描述 数据表
843252AGLF IDT

完全替代

FemtoClock Crystal-to- 3.3V LVPECL Frequency Synthesizer

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