參數(shù)資料
型號(hào)： ICS843002CY-31LFT
英文描述： 700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR
中文描述： ⑩VCXO的700MHz的FEMTOCLOCKS基于頻率轉(zhuǎn)換和抖動(dòng)衰減器
文件頁(yè)數(shù)： 22/27頁(yè)
文件大?。?/td> 274K
代理商： ICS843002CY-31LFT
843002CY-31
www.icst.com/products/hiperclocks.html
REV. B NOVEMBER 22, 2005
22
Integrated
Circuit
Systems, Inc.
ICS843002-31
700MH
Z
F
EMTO
C
LOCKS
VCXO B
ASED
F
REQUENCY
T
RANSLATOR
AND
J
ITTER
A
TTENUATOR
PRELIMINARY
V
CC
- 2V
50
Ω
50
Ω
RTT
Z
o
= 50
Ω
Z
o
= 50
Ω
FOUT
FIN
RTT =
Z
o
1
((V
OH
+ V
OL
) / (V
CC
– 2)) – 2
3.3V
125
Ω
125
Ω
84
Ω
84
Ω
Z
o
= 50
Ω
Z
o
= 50
Ω
FOUT
FIN
The clock layout topology shown below is a typical termi-
nation for LVPECL outputs. The two different layouts men-
tioned are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, ter-
minating resistors (DC current path to ground) or current
sources must be used for functionality. These outputs are
F
IGURE
7B. LVPECL O
UTPUT
T
ERMINATION
F
IGURE
7A. LVPECL O
UTPUT
T
ERMINATION
designed to drive 50
Ω
transmission lines. Matched imped-
ance techniques should be used to maximize operating
frequency and minimize signal distortion.
Figures 7A and
7B
show two different layouts which are recommended only
as guidelines. Other suitable clock layouts may exist and it
would be recommended that the board designers simulate
to guarantee compatibility across all printed circuit and
clock component process variations.
T
ERMINATION
FOR
LVPECL O
UTPUTS
EXPOSED PAD
Expose Metal Pad
(GROUND PAD)
GROUND PLANE
SOLDER
SIGNAL
TRACE
SIGNAL
TRACE
THERMAL VIA
SOLDER MASK
F
IGURE
6. P.C. B
OARD
FOR
E
XPOSED
P
AD
T
HERMAL
R
ELEASE
P
ATH
E
XAMPLE
T
HERMAL
R
ELEASE
P
ATH
The exposed metal pad provides heat transfer from the
device to the P.C. board. The exposed metal pad is ground
pad connected to ground plane through thermal via. The
exposed pad on the device to the exposed metal pad on the
PCB is contacted through solder as shown in
Figure 6.
For
further information, please refer to the Application Note on
Surface Mount Assembly of Amkor’s Thermally /Electrically
Enhance Leadframe Base Package, Amkor Technology.
相關(guān)PDF資料
PDF描述
ICS843002CY-31T 700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR
ICS843002AGI-01 FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843002AGI-01LF FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843002AGI-01LFT FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843002AGI-01T FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS843002CY-31T 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ FEMTOCLOCKS⑩ VCXO BASED FREQUENCY TRANSLATOR AND JITTER ATTENUATOR
ICS843002I 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
ICS843002I-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
ICS843002I-40 制造商:ICS 制造商全稱:ICS 功能描述:175MHZ, FEMTOCLOCKS-TM VCXO BASED SONET/SDH JITTER ATTENUATOR
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
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