参数资料
型号: ICS843023AGILFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 11/12页
文件大小: 0K
描述: IC CLK GENERATOR LVPECL 8-TSSOP
标准包装: 2,500
系列: HiPerClockS™, FemtoClock™
类型: 时钟/频率合成器,时钟发生器
PLL:
输入: 晶体
输出: LVPECL
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 无/是
频率 - 最大: 320MHz
除法器/乘法器: 是/无
电源电压: 2.375 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 带卷 (TR)
其它名称: 843023AGILFT
IDT / ICS 3.3V, 2.5V LVPECL CLOCK GENERATOR
8
ICS843023AGI REV. B JANUARY 9, 2007
ICS843023I
FEMTOCLOCKS CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
TERMINATION FOR 3.3V LVPECL OUTPUT
The clock layout topology shown below is a typical termination
for LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, termi-
nating resistors (DC current path to ground) or current
sources must be used for functionality. These outputs are
FIGURE 3B. LVPECL OUTPUT TERMINATION
FIGURE 3A. LVPECL OUTPUT TERMINATION
designed to drive 50
transmission lines. Matched impedance
techniques should be used to maximize operating frequency
and minimize signal distortion.
Figures 3A and 3B show two
different layouts which are recommended only as guidelines.
Other suitable clock layouts may exist and it would be recom-
mended that the board designers simulate to guarantee com-
patibility across all printed circuit and clock component pro-
cess variations.
V
CC - 2V
50
50
RTT
Z
o = 50
Z
o = 50
FOUT
FIN
RTT =
Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
125
125
84
84
Z
o = 50
Z
o = 50
FOUT
FIN
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ICS843023AGIT 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
ICS843023AGLF 功能描述:IC CLK GENERATOR LVPECL 8-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器,PLL,频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器,扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP(8x8) 包装:带卷 (TR) 其它名称:844S012AKI-01LFT
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ICS843023AGT 制造商:ICS 制造商全称:ICS 功能描述:3.3V, 250MHZ LVPECL CLOCK GENERATOR
ICS843023I 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR