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参数资料
| 型号： | ICS84320AK-01T |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 780 MHz, OTHER CLOCK GENERATOR, QCC32 |
| 封装： | 5 X 5 MM, 0.95 MM HEIGHT, MO-220, VFQFN-32 |
| 文件页数： | 3/20页 |
| 文件大小： | 375K |
| 代理商： | ICS84320AK-01T |
84320AY-01
www.icst.com/products/hiperclocks.html
REV. B APRIL 14, 2006
11
Integrated
Circuit
Systems, Inc.
ICS84320-01
780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
V
CC - 2V
50
Ω
50
Ω
RTT
Z
o = 50Ω
Z
o = 50Ω
FOUT
FIN
RTT =
Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
125
Ω
125
Ω
84
Ω
84
Ω
Z
o = 50Ω
Z
o = 50Ω
FOUT
FIN
The clock layout topology shown below is a typical termi-
nation for LVPECL outputs. The two different layouts men-
tioned are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, ter-
minating resistors (DC current path to ground) or current
sources must be used for functionality. These outputs are
designed to drive 50
Ω transmission lines. Matched imped-
FIGURE 5B. LVPECL OUTPUT TERMINATION
FIGURE 5A. LVPECL OUTPUT TERMINATION
ance techniques should be used to maximize operating
frequency and minimize signal distortion. Figures 5A and
5B show two different layouts which are recommended only
as guidelines. Other suitable clock layouts may exist and it
would be recommended that the board designers simulate
to guarantee compatibility across all printed circuit and clock
component process variations.
TERMINATION FOR LVPECL OUTPUTS
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| ICS84321AYIT | 260 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS84321AYLFT | 260 MHz, OTHER CLOCK GENERATOR, PQFP32 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84320AY-01 | 制造商:ICS 制造商全称:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84320AY-01LN | 功能描述:IC SYNTHESIZER GP LVPECL 32-LQFP 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™ 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 |
| ICS84320AY-01LNT | 功能描述:IC SYNTHESIZER 780MHZ 32-LQFP 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™ 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 |
| ICS84320AY-01T | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84320AYI-01 | 制造商:ICS 制造商全称:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL |
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