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| 型號(hào)： | ICS843101AGI-312T |
| 英文描述： | FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS⑩晶體到的LVPECL 312.5MHZ頻率裕合成器 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大小： | 228K |
| 代理商： | ICS843101AGI-312T |
843101AGI-312
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 1, 2005
10
Integrated
Circuit
Systems, Inc.
ICS843101I-312
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-LVPECL
312.5MH
Z
F
REQUENCY
M
ARGINING
S
YNTHESIZER
PRELIMINARY
C
RYSTAL
I
NPUT
I
NTERFACE
The ICS843101I-312 has been characterized with 18pF
parallel resonant crystals. The capacitor values shown in
Figure 3
below were determined using a 25MHz, 18pF par-
Figure 3. C
RYSTAL
I
NPU
t I
NTERFACE
allel resonant crystal and were chosen to minimize the
ppm error.
A
PPLICATION
I
NFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843101I-312 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 2
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
2. P
OWER
S
UPPLY
F
ILTERING
10
Ω
V
CCA
10
μ
F
.01
μ
F
3.3V or 2.5V
.01
μ
F
V
CC
C1
27p
X1
18pF Parallel Crystal
C2
27p
XTAL_OUT
XTAL_IN
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| ICS843101I-312 | FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER |
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相關(guān)代理商/技術(shù)參數(shù) |
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| ICS843101I-100 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 100MHZ FREQUENCY MARGINING SYNTHESIZER |
| ICS843101I-312 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER |
| ICS843101IAG-100 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-LVPECL 100MHZ FREQUENCY MARGINING SYNTHESIZER |
| ICS843101IAG-100LF | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 100MHZ FREQUENCY MARGINING SYNTHESIZER |
| ICS843101IAG-100LFT | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-LVPECL 100MHZ FREQUENCY MARGINING SYNTHESIZER |
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