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參數(shù)資料
| 型號： | ICS843002I-40 |
| 英文描述： | 175MHZ, FEMTOCLOCKS-TM VCXO BASED SONET/SDH JITTER ATTENUATOR |
| 中文描述： | 175MHz時(shí)，F(xiàn)EMTOCLOCKS，商標(biāo)VCXO的基于SONET / SDH的抖動衰減器 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大小： | 277K |
| 代理商： | ICS843002I-40 |
843002AKI-40
www.icst.com/products/hiperclocks.html
REV. A JUNE 22, 2005
13
Integrated
Circuit
Systems, Inc.
ICS843002I-40
175MH
Z
, F
EMTO
C
LOCKS
VCXO B
ASED
SONET/SDH J
ITTER
A
TTENUATOR
PRELIMINARY
T
ERMINATION
FOR
2.5V LVPECL O
UTPUT
Figure 3Aand Figure 3Bshow examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminat-
ing 50
Ω
to V
CC
- 2V. For V
CC
= 2.5V, the V
CC
- 2V is very close to
ground level. The R3 in Figure 3B can be eliminated and the
termination is shown in Figure 3C.
F
IGURE
3C. 2.5V LVPECL T
ERMINATION
E
XAMPLE
F
IGURE
3B. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
F
IGURE
3A. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
R2
62.5
Zo = 50 Ohm
R1
250
+
-
2.5V
2,5V LVPECL
Driver
R4
62.5
R3
250
Zo = 50 Ohm
2.5V
VCC=2.5V
R1
50
R3
18
Zo = 50 Ohm
Zo = 50 Ohm
+
-
2,5V LVPECL
Driver
VCC=2.5V
2.5V
R2
50
2,5V LVPECL
Driver
VCC=2.5V
R1
50
R2
50
2.5V
Zo = 50 Ohm
Zo = 50 Ohm
+
-
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843002I-40 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 10
μ
F and a .01
μ
F bypass
capacitor should be connected to each V
CCA
pin.
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
.01
μ
F
V
CC
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| ICS843002 | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843002I-41 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHz, FEMTOCLOCKS-TM VCXO BASED SONET/SDH JITTER ATTENUATOR |
| ICS843002I-72 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:FEMTOCLOCKS⑩ VCXO BASED WCDMA CLOCK GENERATOR/JITTER ATTENUATOR |
| ICS843003 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003AG | 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003AGI-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
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