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参数资料
| 型号： | ICS841S01BG |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 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： | 2/16页 |
| 文件大小： | 280K |
| 代理商： | ICS841S01BG |
IDT / ICS PCI EXPRESS CLOCK GENERATOR
10
ICS841S01BG REV. B MAY 23, 2007
ICS841S01
PCI EXPRESS CLOCK GENERATOR
PRELIMINARY
APPLICATION INFORMATION
POWER SUPPLY FILTERING TECHNIQUES
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. The ICS841S01 provides separate
power supplies to isolate any high switching noise from the out-
puts to the internal PLL. V
DD_REF, VDDA, and VDD_SRC should be indi-
vidually connected to the power supply plane through vias, and
bypass capacitors should be used for each pin. To achieve opti-
mum jitter performance, power supply isolation is required. Fig-
ure 1 illustrates how a 10
Ω resistor along with a 10μF and a
.01
μF bypass capacitor should be connected to each V
DDA pin.
The 10
Ω resistor can also be replaced by a ferrite bead.
FIGURE 1. POWER SUPPLY FILTERING
10
Ω
V
DDA
10
μF
.01
μF
3.3V
.01
μF
V
DD
USING THE ON-BOARD CRYSTAL OSCILLATOR
The ICS841S01 features a fully integrated Pierce oscillator to
minimize system implementation costs. The ICS841S02I may be
operated with a 25MHz crystal and without additional 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 2.
TABLE 7. RECOMMENDED CRYSTAL SPECIFICATIONS
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Ω
FIGURE 2. CRYSTAL OSCILLATOR WITH TRIM CAPACITOR
The crystal and optional trim capacitors should be located as
close to the ICS841S01 XTAL_IN and XTAL_OUT pins as possible
to avoid any board level parasitic.
XT AL_IN
XTAL_OUT
25MHz
TBD
33pF
18pF
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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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