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ICS843242AGT PDF预览

ICS843242AGT

更新时间: 2024-11-03 05:12:19
品牌 Logo 应用领域
艾迪悌 - IDT /
页数 文件大小 规格书
16页 280K
描述
FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843242AGT 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
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:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.92
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
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:625 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):240
电源:3.3 V主时钟/晶体标称频率:31.25 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:Tin/Lead (Sn85Pb15)
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:20
宽度:4.4 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

ICS843242AGT 数据手册

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PRELIMINARY  
FEMTOCLOCKS™ CRYSTAL-TO-3.3V  
LVPECL FREQUENCY SYNTHESIZER  
ICS843242  
GENERAL DESCRIPTION  
FEATURES  
Two 3.3V differential LVPECL output pairs  
The ICS843242 is a 2 differential output LVPECL  
Synthesizer designed to generate Ethernet  
ICS  
HiPerClockS™  
• Using a 31.25MHz or 26.041666 crystal, the two output  
banks can be independently set for 625MHz, 312.5MHz,  
156.25MHz or 125MHz  
reference clock frequencies and is a member of the  
HiPerClocks™ family of high performance clock  
solutions from IDT. Using a 31.25MHz or  
26.041666MHz, 18pF parallel resonant crystal, the follow-ing  
frequencies can be generated based on the settings of  
4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz,  
312.5MHz, 156.25MHz, and 125MHz.  
• Crystal oscillator interface  
• VCO range: 560MHz to 700MHz  
• RMS phase jitter @ 625MHz (1.875MHz - 20MHz):  
0.4ps (typical)  
The two banks have their own dedicated frequency select pins  
and can be independently set for the frequencies mentioned  
above. The ICS843242 IDT’s 3 generation low phase noise  
VCO technology and can achieve 1ps or lower typical rms  
phase jitter, easily meeting Ethernet jitter requirements. The  
ICS843242 is packaged in a small 16-pin TSSOP package.  
• Full 3.3V supply mode  
rd  
• 0°C to 70°C ambient operating temperature  
• Industrial temperature available upon request  
• Available in both standard (RoHS 5) and lead-free (RoHS 6)  
compliant packages  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
0=Pullup  
1=Pulldown  
2
SELA[0:1}  
1
2
3
4
5
6
7
8
nQB  
QB  
16  
15  
14  
13  
12  
11  
10  
9
XTAL_IN  
XTAL_OUT  
VEE  
SELA1  
SELA0  
VCC  
0 0 ÷1  
0 1 ÷2 (default)  
1 0 ÷4  
QA  
VCCO_B  
SELB1  
SELB2  
VCCO_A  
QA  
nQA  
XTAL_IN  
1 1 ÷5  
Phase  
Detector  
VCO  
OSC  
560MHz - 700MHz  
0 0 ÷1  
0 1 ÷2  
1 0 ÷4 (default)  
1 1 ÷5  
XTAL_OUT  
QB  
VCCA  
FB_SEL  
nQB  
nQA  
Feedback Divider  
0 = ÷20 (default)  
1 = ÷24  
ICS843242  
16-Lead TSSOP  
4.4mm x 5.0mm x 0.92mm  
package body  
Pulldown  
0=Pulldown  
1=Pullup  
FB_SEL  
SELB[0:1}  
2
G Package  
Top View  
The Preliminary Information presented herein represents a product in pre-production.The noted characteristics are based on initial product characterization  
and/or qualification.Integrated DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.  
IDT/ ICS3.3V LVPECL FREQUENCY SYNTHESIZER  
1
ICS843242AG REV. A OCTOBER 2, 2007  

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