- 您现在的位置：买卖IC网 > PDF目录67689 > ICS843034AY-01T (SPECTRUM CONTROL INC) 640 MHz, OTHER CLOCK GENERATOR, PQFP48 PDF资料下载
参数资料
| 型号： | ICS843034AY-01T |
| 厂商： | SPECTRUM CONTROL INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 640 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC, LQFP-48 |
| 文件页数： | 6/22页 |
| 文件大小： | 292K |
| 代理商： | ICS843034AY-01T |
843034AY-01
www.icst.com/products/hiperclocks.html
REV. C NOVEMBER 28, 2005
14
Integrated
Circuit
Systems, Inc.
ICS843034-01
FEMTOCLOCKS
MULTI-RATE LVPECL FREQUENCY SYNTHESIZER
PRELIMINARY
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843034-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA, and VCCO_x
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 24
Ω resistor along with a 10μF and a .01μF bypass
capacitor should be connected to each V
CCA pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 2. POWER SUPPLY FILTERING
24
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
APPLICATION INFORMATION
Figure 3 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
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LVCMOS/LVTTL 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
CLK
nCLK
VCC
FIGURE 3. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT
相关PDF资料 |
PDF描述 |
|---|---|
| ICS843034AYT | 750 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| ICS843034AYLF | 750 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| ICS843081AGI-01T | 700 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS8430AY-51LF | 600 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8430AYI-71LFT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843034AYL | 制造商:ICS 制造商全称:ICS 功能描述:MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843034AYLF | 功能描述:IC CLK SYNTHESIZER LVPECL 48LQFP 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 |
| ICS843034AYLFT | 功能描述:IC CLK SYNTHESIZER LVPECL 48LQFP 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 |
| ICS843034AYT | 制造商:ICS 制造商全称:ICS 功能描述:MULTI-RATE 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843051 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
发布紧急采购，3分钟左右您将得到回复。