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845252AKILFT

更新时间: 2024-11-24 08:09:31
品牌 Logo 应用领域
艾迪悌 - IDT 晶体时钟发生器外围集成电路
页数 文件大小 规格书
17页 769K
描述
FemtoClock? Crystal-to-CML Clock Generator

845252AKILFT 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:VFQFPN
包装说明:VFQFN-32针数:32
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.8
Is Samacsys:N其他特性:CAN ALSO OPERATES AT 2.5V SUPPLY
JESD-30 代码:S-XQCC-N32JESD-609代码:e3
长度:5 mm湿度敏感等级:3
端子数量:32最高工作温度:85 °C
最低工作温度:-40 °C最大输出时钟频率:312.5 MHz
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装等效代码:LCC32,.2SQ,20封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:2.5/3.3 V主时钟/晶体标称频率:25 MHz
认证状态:Not Qualified座面最大高度:1 mm
子类别:Clock Generators最大压摆率:88 mA
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:INDUSTRIAL
端子面层:Matte Tin (Sn) - annealed端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:30宽度:5 mm
uPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHERBase Number Matches:1

845252AKILFT 数据手册

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FemtoClockCrystal-to-CML Clock  
Generator  
ICS845252I  
DATA SHEET  
General Description  
Features  
The ICS845252I is a 3.3V/2.5V CML clock generator  
designed for Ethernet applications. The device  
synthesizes either a 50MHz, 62.5MHz, 100MHz,  
125MHz, 156.25MHz, 250MHz or 312.5MHz clock  
signal with excellent phase jitter performance. The  
Clock generation of: 50MHz, 62.5MHz, 100MHz, 125MHz,  
156.25MHz, 250MHz and 312.5MHz  
S
IC  
HiPerClockS™  
Two differential CML clock output pairs  
Crystal interface designed for 25MHz,  
18pF parallel resonant crystal  
clock signal is distributed to two low-skew differential CML outputs.  
The device is suitable for driving the reference clocks of Ethernet  
PHYs. The device supports 3.3V and 2.5V voltage supply and is  
packaged in a small, lead-free (RoHS 6) 32-lead VFQFN package.  
The extended temperature range supports telecommunication,  
wireless infrastructure and networking end equipment requirements.  
The device is a member of the HiPerClockS™ family of High  
Performance Clock Solutions from IDT.  
RMS phase jitter @ 125MHz, using a 25MHz crystal  
(1.875MHz – 20MHz): 400fs (typical), 3.3V  
Offset  
Noise Power  
100Hz.................... -102.4 dBc/Hz  
1kHz.................... -119.4 dBc/Hz  
10kHz................... -124.8 dBc/Hz  
100kHz................... -125.7 dBc/Hz  
LVCMOS interface levels for the control inputs  
Full 3.3V and 2.5V supply voltage  
Available in lead-free (RoHS 6) 32 VFQFN package  
-40°C to 85°C ambient operating temperature  
Block Diagram  
Pin Assignment  
XTAL_IN  
Q0  
nQ0  
0
32 31 30 29 28 27 26 25  
0
OSC  
÷2 (default),  
1
2
3
4
5
6
7
8
nQ0  
nc  
24  
23  
22  
21  
VCO  
490-680  
MHz  
÷4,  
÷5,  
÷10  
Phase  
Detector  
XTAL_OUT  
REF_CLK  
REF_SEL  
Q1  
nQ1  
1
Q0  
nc  
f
REF  
Pulldown  
VDD  
REF_SEL  
1
nOE  
nc  
FSEL1  
Pulldown  
÷20,  
÷25 (default)  
20 FSEL0  
nc  
19  
nc  
nc  
nc  
Pulldown  
FBSEL  
nBYPASS  
FSEL1:0  
nOE  
Pullup  
VDD  
nc  
18  
17  
Pulldown, Pulldown  
Pulldown  
9
10 11 12 13 14 15 16  
ICS845252I  
32 lead VFQFN  
5.0mm x 5.0mm x 0.925mm package body  
K Package  
Top View  
ICS845252AKI REVISION A SEPTEMBER 30, 2009  
1
©2009 Integrated Device Technology, Inc.  

845252AKILFT 替代型号

型号 品牌 替代类型 描述 数据表
845252AKILF IDT

完全替代

FemtoClock? Crystal-to-CML Clock Generator

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