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參數(shù)資料
| 型號： | ICS843020AY-01LFT |
| 英文描述： | FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS -商標(biāo)680MHZ，晶體至3.3V的差分LVPECL頻率合成器 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 218K |
| 代理商： | ICS843020AY-01LFT |
843020AY-01
www.icst.com/products/hiperclocks.html
REV. B APRIL 14, 2005
12
Integrated
Circuit
Systems, Inc.
ICS843020-01
F
EMTO
C
LOCKS
680MH
Z
, C
RYSTAL
-
TO
-
3.3V D
IFFERENTIAL
LVPECL F
REQUENCY
S
YNTHESIZER
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 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, terminat-
ing resistors (DC current path to ground) or current sources
must be used for functionality. These outputs are designed to
F
IGURE
4B. LVPECL O
UTPUT
T
ERMINATION
F
IGURE
4A. LVPECL O
UTPUT
T
ERMINATION
drive 50
Ω
transmission lines. Matched impedance techniques
should be used to maximize operating frequency and minimize
signal distortion. Figures 4A and 4Bshow 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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS843020AY-01T | FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843020-01 | FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843021AGI-01 | FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
| ICS843021AGI-01T | FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
| ICS843021I-01 | FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843020AY-01T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843021 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843021AG | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843021AG-01 | 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER LVPECL 8TSSOP |
| ICS843021AG-01T | 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER LVPECL 8TSSOP |
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