參數(shù)資料
型號(hào): ICS843001AG-21LF
英文描述: FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
中文描述: FEMTOCLOCKS⑩晶體至3.3的LVPECL頻率合成器
文件頁數(shù): 8/15頁
文件大小: 193K
代理商: ICS843001AG-21LF
843001AG-21
www.icst.com/products/hiperclocks.html
REV. A OCTOBER 26, 2005
8
Integrated
Circuit
Systems, Inc.
ICS843001-21
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-3.3V LVPECL
F
REQUENCY
S
YNTHESIZER
C
RYSTAL
I
NPUT
I
NTERFACE
The ICS843001-21 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 19.44MHz, 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
A
PPLICATION
I
NFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843001-21 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
. The 10
Ω
resis-
tor can also be replaced by a ferrite bead.
P
OWER
S
UPPLY
F
ILTERING
T
ECHNIQUES
F
IGURE
1. P
OWER
S
UPPLY
F
ILTERING
10
Ω
V
CCA
10
μ
F
.01
μ
F
3.3V
.01
μ
F
V
CC
相關(guān)PDF資料
PDF描述
ICS843001AG-21LFT FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS843001AG-21T FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS843001AGI-22 FEMTOCLOCKS⑩ CRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843001AGI-22LF FEMTOCLOCKS⑩ CRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843001AGI-22LFT FEMTOCLOCKS⑩ CRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
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ICS843001AGI-22 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
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