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參數資料
| 型號： | ICS840008-01 |
| 英文描述： | FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS⑩CRYSTAL-TO-LVCMOS/LVTTL頻率合成器 |
| 文件頁數： | 10/13頁 |
| 文件大?。?/td> | 193K |
| 代理商： | ICS840008-01 |
840001AR-01
www.icst.com/products/hiperclocks.html
REV. A APRIL 7, 2005
10
Integrated
Circuit
Systems, Inc.
ICS840008-01
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-LVCMOS/LVTTL
F
REQUENCY
S
YNTHESIZER
PRELIMINARY
A
PPLICATION
I
NFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS840008-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
, V
, and V
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 10μF and a .01
μ
F bypass
capacitor should be connected to each V
DDA
.
P
OWER
S
UPPLY
F
ILTERING
T
ECHNIQUES
F
IGURE
1. P
OWER
S
UPPLY
F
ILTERING
10
Ω
V
DDA
10
μ
F
.01
μ
F
3.3V
.01
μ
F
V
DD
C
RYSTAL
I
NPUT
I
NTERFACE
The ICS840008-01 has been characterized with 18pF paral-
lel resonant crystals. The capacitor values shown in Figure 2
Figure 2. C
RYSTAL
I
NPU
t I
NTERFACE
below were determined using a 25MHz 18pF parallel reso-
nant crystal and were chosen to minimize the ppm error.
ICS84332
XTAL_IN
XTAL_OUT
X1
18pF Parallel Crystal
C2
22p
C1
22p
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| ICS840011AG | FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
| ICS840011AGLN | FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
| ICS840011AGLNT | FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ICS840008AR01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR-01T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840011 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
| ICS840011AG | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
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