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參數(shù)資料
| 型號(hào)： | ICS843002AG |
| 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(yè)數(shù)： | 10/16頁(yè) |
| 文件大?。?/td> | 309K |
| 代理商： | ICS843002AG |
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843002AG
www.icst.com/products/hiperclocks.html
REV.
B MAY 6
, 2005
10
Integrated
Circuit
Systems, Inc.
ICS843002
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. 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 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.
F
IGURE
4B. ICS843002 PC B
OARD
L
AYOUT
E
XAMPLE
C1
27pF
VCC
VCCO
Zo = 50 Ohm
R6
50
C6
0.1u
0.C4
V
X1
26.5625 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
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
Not Install
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
PC B
OARD
L
AYOUT
E
XAMPLE
Figure 4B shows an example of ICS843002 P.C. board layout.
The crystal X1 footprint shown in this example allows installa-
tion of either surface mount HC49S or through-hole HC49 pack-
age. 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 assumes that
the board has clean analog power ground plane.
T
ABLE
6. F
OOTPRINT
T
ABLE
e
c
n
e
2
r
e
R
,
C
3
C
,
C
2
R
O
N
h
s
e
2
5
3
3
z
z
S
4
0
8
0
6
0
6
0
t
e
C
0
0
0
0
8
C
,
C
,
C
,
C
s
e
n
o
.
m
p
m
a
o
x
c
e
s
y
a
e
a
T
s
n
:
E
n
T
w
o
t
o
相關(guān)PDF資料 |
PDF描述 |
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| ICS843002AGLF | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AGLFT | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AGT | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002ALF | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003AGI-01T | FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843002AG-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843002AG-01LF | 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:Precision Edge® 類型:時(shí)鐘/頻率合成器 PLL:無(wú) 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無(wú)/無(wú) 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND |
| ICS843002AG-01LFT | 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)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 |
| 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 |
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