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參數(shù)資料
| 型號： | ICS843002AG-01LFT |
| 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)： | 10/16頁 |
| 文件大小： | 238K |
| 代理商： | ICS843002AG-01LFT |
843002AG-01
www.icst.com/products/hiperclocks.html
REV. B MAY 6, 2005
10
Integrated
Circuit
Systems, Inc.
ICS843002-01
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
3.3V LVPECL F
REQUENCY
S
YNTHESIZER
L
AYOUT
G
UIDELINE
Figure 4Ashows a schematic example of the ICS843002-01.
An example of LVEPCL termination is shown in this schematic.
Additional LVPECL termination approaches are shown in the
LVPECL Termination Application Note. In this example, an 18 pF
F
IGURE
4A. ICS843002-01 S
CHEMATIC
E
XAMPLE
parallel resonant 26.5625MHz crystal is used. The C1=27pF
and C2=33pF are recommended for frequency accuracy. For
different board layout, the C1 and C2 may be slightly adjusted
for optimizing frequency accuracy.
PC B
OARD
L
AYOUT
E
XAMPLE
Figure 4B shows an example of ICS843002-01 P.C. board lay-
out. The crystal X1 footprint shown in this example allows in-
stallation of either surface mount HC49S or through-hole HC49
package. The footprints of other components in this example
are listed in the Table 6. There should be at least one decoupling
capacitor per power pin. The decoupling capacitors should be
located as close as possible to the power pins. The layout as-
sumes that the board has clean analog power ground plane.
F
IGURE
4B. ICS843002-01 PC B
OARD
L
AYOUT
E
XAMPLE
2C1
VCC
VCCO
Zo = 50 Ohm
R6
50
C6
0.C4
V
X1
25 MHz
VCC=3.3V
18pF
To Logic
Input
pins
C7
Zo = 50 Ohm
RU1
1K
To Logic
Input
pins
C9
0.1u
Set Logic
Input to
'1'
VCCO=3.3V
VCC
VCC
R5
50
U1
ICS843002-01
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
1
2
1
V
Q
n
M
n
n
V
F
V
F
X
X
T
n
V
V
n
Q
V
n
VCC
VCCO
RD2
1K
VCCA
R4
50
C3
Zo = 50 Ohm
RD1
R2
10
Set Logic
Input to
'0'
Zo = 50 Ohm
+
-
C8
R7
50
Logic Control Input Examples
R9
50
C2
33pF
R8
50
+
-
RU2
Not Install
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5
3
3
z
z
S
4
0
8
0
6
0
6
0
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e
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0
0
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ABLE
6. F
OOTPRINT
T
ABLE
相關(guān)PDF資料 |
PDF描述 |
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| ICS843002AG-01T | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002-31 | 700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR |
| ICS843002CY31 | 700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR |
| ICS843002CY-31 | 700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843002AG-01T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AGI | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AGI-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AGI-01LF | 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標準包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| ICS843002AGI-01LFT | 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標準包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
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