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参数资料
| 型号： | ICS84324DM |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 125 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封装： | 0.300 INCH, MS-013, MO-119, SOIC-24 |
| 文件页数： | 11/13页 |
| 文件大小： | 783K |
| 代理商： | ICS84324DM |
84324DM
www.icst.com/products/hiperclocks.html
REV. A JANUARY 30, 2003
7
Integrated
Circuit
Systems, Inc.
ICS84324
CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS84324 provides sepa-
rate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC and VCCA 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
resistor along with a 10F and a .01F bypass
capacitor should be connected to each V
CCA pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 2. POWER SUPPLY FILTERING
10
V
CCA
10
F
.01
F
3.3V
.01
F
V
CC
CRYSTAL INPUT INTERFACE
A crystal can be characterized for either series or parallel mode
operation. The ICS84324 has a built-in crystal oscillator circuit.
This interface can accept either a series or parallel crystal without
additional components and generate frequencies with accuracy
Figure 3. CRYSTAL INPUt INTERFACE
suitable for most applications. Additional accuracy can be
achieved by adding two small capacitors C1 and C2 as shown in
Figure 3.
C2
22pF
C1
18pF
25MHz
X1
ICS84324
19
20
XTAL2
XTAL1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84324EM | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| ICS84324EMT | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| ICS84325 | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| ICS8432-51 | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843251-04 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
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