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参数资料
| 型号： | ICS840051AGIT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 170 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封装： | 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8 |
| 文件页数： | 9/11页 |
| 文件大小： | 398K |
| 代理商： | ICS840051AGIT |
840051AGI
www.icst.com/products/hiperclocks.html
REV. A JANUARY 14, 2005
7
Integrated
Circuit
Systems, Inc.
ICS840051I
FEMTOCLOCKSCRYSTAL-TO-
LVCMOS/LVTTL CLOCK GENERATOR
APPLICATION INFORMATION
Figure 2. CRYSTAL INPUt INTERFACE
CRYSTAL INPUT INTERFACE
The ICS840051I has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown in
Figure 2 below were determined using a 26.04167MHz, 18pF
parallel resonant crystal and were chosen to minimize the ppm
error. The optimum C1 and C2 values can be slightly adjusted
for different board layouts.
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. The ICS840051I provides separate
power supplies to isolate any high switching noise from the out-
puts to the internal PLL. V
DD and VDDA should be individually con-
nected to the power supply plane through vias, and bypass ca-
pacitors should be used for each pin. To achieve optimum
jitter performance, power supply isolation is required.
Figure 1
illustrates how a 10
resistor along with a 10F and a .01F
bypass capacitor should be connected to each V
DDA pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 1. POWER SUPPLY FILTERING
10
V
DDA
10
F
.01
F
3.3V or 2.5V
.01
F
V
DD
C1
33p
X1
18pF Parallel Crystal
C2
22p
XTAL_OUT
XTAL_IN
ICS840051I
FEMTOCLOCKS CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR
TSD
IDT / ICS FEMTOCLOCKS CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR
ICS840051I
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS840051AGLF | 功能描述:IC CLOCK GENERATOR 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:2,000 系列:- 类型:PLL 频率合成器 PLL:是 输入:晶体 输出:时钟 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/无 频率 - 最大:1GHz 除法器/乘法器:是/无 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-LSSOP（0.175"，4.40mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:NJW1504V-TE1-NDNJW1504V-TE1TR |
| ICS840051AGLFT | 功能描述:IC CLOCK GENERATOR 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:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
| ICS840051AGT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCK CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
| ICS840051I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840-125 | 制造商:ICS 制造商全称:ICS 功能描述:125MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT |
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