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參數(shù)資料
| 型號： | ICS843-106 |
| 英文描述： | 106.25MHZ, LVCMOS, LVPECL DUAL OUTPUT OSCILLATOR |
| 中文描述： | 106.25MHZ，的LVCMOS，LVPECL的雙輸出振蕩器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 193K |
| 代理商： | ICS843-106 |
843AG-106
www.icst.com/products/hiperclocks.html
REV. A JANUARY 10, 2006
7
Integrated
Circuit
Systems, Inc.
ICS843-106
106.25MH
Z
, LVCMOS, LVPECL
D
UAL
O
UTPUT
O
SCILLATOR
T
ERMINATION
FOR
3.3V LVPECL O
UTPUT
The clock layout topology shown below is a typical termina-
tion for LVPECL outputs. The two different layouts mentioned
are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, termi-
nating resistors (DC current path to ground) or current sources
must be used for functionality. These outputs are designed to
F
IGURE
2B. LVPECL O
UTPUT
T
ERMINATION
F
IGURE
2A. LVPECL O
UTPUT
T
ERMINATION
drive 50
Ω
transmission lines.Matched impedance techniques
should be used to maximize operating frequency and mini-
mize signal distortion.
Figures 2A and 2B
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 varia-
tions.
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
F
REQUENCY
S
TABILITY
The table shown provides a basic guideline in selecting
the proper quartz crystal that meets a timing budget of
±100ppm. For more information on selecting the proper
r
e
m
n
e
u
n
e
u
q
r
g
n
A
a
c
c
A
d
a
o
L
l
o
T
a
q
r
a
P
e
e
l
c
y
T
s
U
p
p
p
p
p
p
p
p
p
p
p
p
e
c
n
a
T
y
a
S
s
e
Y
0
S
C
I
a
a
p
l
r
e
v
y
y
1
c
c
0
3
±
m
m
m
m
m
m
0
3
±
5
0
1
1
3
±
8
±
±
±
r
s
a
c
c
A
E
g
n
m
O
e
y
c
a
y
r
c
o
c
n
C
O
r
i
8
crystal, see the application note,
Crystal Timing Budget
and Accuracy for FemtoClock
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS8430-111 | 700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430DY-111 | 700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430DY-111T | 700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430-51 | 600MHZ, LOW JITTER LVCMOS/ LVTTL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430AY-51 | 600MHZ, LOW JITTER LVCMOS/ LVTTL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS8431-11 | 制造商:ICS 制造商全稱:ICS 功能描述:255MHZ, LOW JITTER, LVPECL FREQUENCY SYNTHESIZER |
| ICS8431-21 | 制造商:ICS 制造商全稱:ICS 功能描述:350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS84314 | 制造商:ICS 制造商全稱:ICS 功能描述:350MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314-02 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314A02L | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
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