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参数资料
| 型号： | ICS843207CY-350LF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 375 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026, LQFP-48 |
| 文件页数： | 15/16页 |
| 文件大小： | 266K |
| 代理商： | ICS843207CY-350LF |
IDT / ICS LVPECL FREQUENCY MARGINING SYNTHESIZER
8
ICS843207CY-350 REV. A DECEMBER 3, 2007
ICS843207-350
FEMTOCLOCKS CRYSTAL-TO-LVPECL 350MHZ FREQUENCY MARGINING SYNTHESIZER
PRELIMINARY
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
The ICS843207-350 has been character ized with 18pF
parallel resonant crystals. The capacitor values shown in
FIGURE 2. CRYSTAL INPUt INTERFACE
Figure 2 below were determined using a 14MHz, 18pF parallel
resonant crystal and were chosen to minimize the ppm error.
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter perfor-
mance, power supply isolation is required. The ICS843207-350
provides separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA and VCCO
should be individually connected to the power supply plane
through vias, and 0.01F bypass capacitors should be used
for each pin. Figure 1 illustrates this for a generic V
CC pin and
also shows that V
CCA requires that an additional 10Ω resistor
along with a 10F bypass capacitor be connected to the V
CCA
pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 1. POWER SUPPLY FILTERING
10
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
C1
27p
X1
18pF Parallel Crystal
C2
27p
XTAL_OUT
XTAL_IN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843207CY-350LFT | 功能描述:IC SYNTHESIZER 350MHZ 48-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™, FemtoClock™ 标准包装:27 系列:Precision Edge® 类型:频率合成器 PLL:是 输入:PECL，晶体 输出:PECL 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/是 频率 - 最大:800MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 5.25 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| ICS84320A01N | 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 |
| ICS84320AI01 | 制造商:ICS 制造商全称:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL |
| ICS84320AK01 | 制造商:ICS 制造商全称:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84320AK-01 | 制造商:ICS 制造商全称:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
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