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| 型号： | ICS8427DK-02T |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 500 MHz, OTHER CLOCK GENERATOR, QCC32 |
| 封装： | 5 X 5 MM, 0.75 MM HEIGHT, MO-220VHHD-2, VFQFN-32 |
| 文件页数： | 4/23页 |
| 文件大小： | 1597K |
| 代理商： | ICS8427DK-02T |
IDT / ICS LVHSTL FREQUENCY SYNTHESIZER
12
ICS8427DY-02 REV A OCTOBER 13, 2006
ICS8427-02
500MHZ, LOW JITTER, LVCMOS/CRYSSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
INPUTS:
CRYSTAL INPUT:
For applications not requiring the use of the crystal oscillator input,
both XTAL_IN and XTAL_OUT can be left floating. Though not
required, but for additional protection, a 1k
resistor can be tied
from XTAL_IN to ground.
TEST_CLK INPUT:
For applications not requiring the use of the test clock, it can be
left floating. Though not required, but for additional protection, a
1k
resistor can be tied from the TEST_CLK to ground.
LVCMOS CONTROL PINS:
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
resistor can be used.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
OUTPUTS:
LVHSTL OUTPUT
All unused LVHSTL outputs can be left floating. We recommend
that there is no trace attached. Both sides of the differential output
pair should either be left floating or terminated.
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8427-02 provides sepa-
rate 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 3 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 3. POWER SUPPLY FILTERING
10
V
DDA
10
F
.01
F
2.5V
.01
F
V
DD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS8427DY-02 | 制造商:ICS 制造商全称:ICS 功能描述:500MHZ, LOW JITTER LVCMOS/CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER |
| ICS8427DY02L | 制造商:ICS 制造商全称:ICS 功能描述:500MHZ, LOW JITTER LVCMOS/CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER |
| ICS8427DY-02LF | 功能描述:IC SYNTHESIZER 500MHZ 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 |
| ICS8427DY-02LFT | 功能描述:IC SYNTHESIZER 500MHZ 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 |
| ICS8427DY-02T | 制造商:ICS 制造商全称:ICS 功能描述:500MHZ, LOW JITTER LVCMOS/CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER |
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