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| 型号： | ICS873996AYLFT |
| 元件分类： | 时钟及定时 |
| 英文描述： | 873996 SERIES, PLL BASED CLOCK DRIVER, 6 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MS-026, TQFP-48 |
| 文件页数： | 2/18页 |
| 文件大小： | 246K |
| 代理商： | ICS873996AYLFT |
873996AY
www.icst.com/products/hiperclocks.html
REV. A DECEMBER 22, 2004
10
Integrated
Circuit
Systems, Inc.
ICS873996
DIFFERENTIAL-TO-3.3V LVPECL
ZERO DELAY/MULTIPLIER/DIVIDER
PRELIMINARY
Figure 2 shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
CC/2 is
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio
FIGURE 2. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS
of R1 and R2 might need to be adjusted to position the V_REF
in the center of the input voltage swing. For example, if the
input clock swing is only 2.5V and V
CC = 3.3V, V_REF should be
1.25V and R2/R1 = 0.609.
V_REF
R1
1K
C1
0.1u
R2
1K
Single Ended Clock Input
CLKx
nCLKx
VCC
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise.The ICS873996 provides sepa-
rate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA and VCCOx
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 iso-
lation is required. Figure 1 illustrates how a 10
Ω resistor along
with a 10
μF and a .01μF bypass capacitor should be con-
nected to each V
CCA pin.
FIGURE 1. POWER SUPPLY FILTERING
10
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
POWER SUPPLY FILTERING TECHNIQUES
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相关代理商/技术参数 |
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| ICS874001AGI-02LFT | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:FemtoClock™, 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 |
| ICS874001AGI-05LF | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:FemtoClock™, 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 |
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| ICS874002AGLF | 功能描述:IC JITTER ATTENUATOR 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 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 |
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