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参数资料
| 型号： | ICS8421004AGILF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 226.66 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封装： | 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24 |
| 文件页数： | 12/13页 |
| 文件大小： | 484K |
| 代理商： | ICS8421004AGILF |
8421004AGI
www.icst.com/products/hiperclocks.html
REV. A MARCH 29, 2005
8
Integrated
Circuit
Systems, Inc.
ICS8421004I
FEMTOCLOCKSCRYSTAL-TO-
HSTL FREQUENCY SYNTHESIZER
PRELIMINARY
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8421004I provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
DD, VDDA, and VDDO
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 1 illustrates how
a 10
Ω resistor along with a 10F and a .01μF bypass
capacitor should be connected to each V
DDA.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 1. POWER SUPPLY FILTERING
10
Ω
V
DDA
10
μF
.01
μF
3.3V or 2.5V
.01
μF
V
DD
CRYSTAL INPUT INTERFACE
The ICS8421004I has been characterized with 18pF parallel
resonant crystals. The capacitor values shown in
Figure 2
Figure 2. CRYSTAL INPUt INTERFACE
below were determined using a 26.5625MHz 18pF parallel
resonant crystal and were chosen to minimize the ppm error.
ICS8421004I
C1
22p
X1
18pF Parallel Crystal
C2
22p
XTAL_OUT
XTAL_IN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS8421004AGIT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER |
| ICS8421004I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER |
| ICS8421004I-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER |
| ICS8422002AGI | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER |
| ICS8422002AGI-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER |
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