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参数资料
| 型号： | ICS840024AGI |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 125 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封装： | 6.50 X 4.40 MM, 0.92 MM HEIGHT, MO-153, TSSOP-20 |
| 文件页数： | 12/12页 |
| 文件大小： | 268K |
| 代理商： | ICS840024AGI |
Integrated
Circuit
Systems, Inc.
840024AGI
www.icst.com/products/hiperclocks.html
REV. A DECEMBER 16, 2004
9
ICS840024I
FEMTOCLOCKSCRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
PRELIMINARY
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS840024I provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
DD, VDDA, and VDDO
should be individually connected to the power supply
plane through vias, and bypass capacitors 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.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 1. POWER SUPPLY FILTERING
10
V
DDA
10
F
.01
F
3.3V
.01
F
V
DD
CRYSTAL INPUT INTERFACE
The ICS840024I has been characterized with 18pF parallel
resonant crystals. The capacitor values shown in
Figure 2
Figure 2. CRYSTAL INPUt INTERFACE
below were determined using a 25MHz 18pF parallel reso-
nant crystal and were chosen to minimize the ppm error.
ICS84332
XTAL_IN
XTAL_OUT
X1
18pF Parallel Cry stal
C2
22p
C1
22p
ICS840024I
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS840024AGILF | 功能描述:IC FREQ SYNTHESIZER 20-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 |
| ICS840024AGILFT | 功能描述:IC FREQ SYNTHESIZER 20-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 |
| ICS840024AGIT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840024I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840031AMI | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
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