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参数资料
| 型号： | ICS841S01BGI |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO16 |
| 封装： | 4.40 X 5 MM, 0.92 MM HEIGHT, MO-153, TSSOP-16 |
| 文件页数： | 2/13页 |
| 文件大小： | 271K |
| 代理商： | ICS841S01BGI |
841S01BGI
www.icst.com/products/hiperclocks.html
JUNE 12, 2006
10
Integrated
Circuit
Systems, Inc.
ICS841S01I
PCI EXPRESSCLOCK GENERATOR
PRELIMINARY
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply
pins are vulnerable to random noise. The ICS841S01I pro-
vides separate power supplies to isolate any high switch-
ing noise from the outputs to the internal PLL. V
DD_REF, VDDA,
and V
DD_SRC 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 2 illustrates how
a 10
Ω resistor along with a 10F and a .01μF bypass
capacitor should be connected to each V
DDA. The 10Ω resis-
tor can also be replaced by a ferrite bead.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 2. POWER SUPPLY FILTERING
10
Ω
V
DDA
10
μF
.01
μF
3.3V
.01
μF
V
DD_REF
INPUTS:
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
Ω resistor can be used.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
OUTPUTS:
HCSL OUTPUT
All unused HCSL 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.
USING THE ON-BOARD CRYSTAL OSCILLATOR
The ICS841S01I features a fully integrated Pierce oscillator
to minimize system implementation costs. The ICS841S01I
may be operated with a 25MHz crystal and without addi-
tional components. Recommended operation for the crystal
should be of a parallel resonant type and a load specification
of C
L = 18pF. See Table 7
for complete crystal specifications.
If more precise frequency control is desired, the addition of
capacitors from each of the XTAL_IN and XTAL_OUT pins
to ground may be used to trim the frequency as shown in
Figure 3.
TABLE 7. RECOMMENDED CRYSTAL SPECIFICATIONS
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FIGURE3. CRYSTAL OSCILLATOR WITHTRIM CAPACITOR
The crystal and optional trim capacitors should be located as
close to the ICS841S01I XTAL_IN and XTAL_OUT pins as
possible to avoid any board level parasitic.
XT AL_IN
XTAL_OUT
25 MHz
TBD
相关PDF资料 |
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| ICS841S01BGT | 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO16 |
| ICS841S01BG | 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO16 |
| ICS841S02BGILFT | 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS841S01BGLF | 功能描述:IC CLK GENERATOR PLL 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, PCI Express® (PCIe) 标准包装:1 系列:- 类型:时钟/频率发生器，多路复用器 PLL:是 主要目的:存储器，RDRAM 输入:晶体 输出:LVCMOS 电路数:1 比率 - 输入:输出:1:2 差分 - 输入:输出:无/是 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:Digi-Reel® 其它名称:296-6719-6 |
| ICS841S01BGLFT | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:PCI EXPRESS⑩ CLOCK GENERATOR |
| ICS841S01BGT | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:PCI EXPRESS⑩ CLOCK GENERATOR |
| ICS841S02BGI | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:PCI EXPRESS⑩ CLOCK GENERATOR |
| ICS841S02BGILF | 功能描述:IC CLK GENERATOR PLL 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, PCI Express® (PCIe) 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
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