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參數(shù)資料
| 型號： | ICS843001BGILFT |
| 英文描述： | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| 中文描述： | FEMTOCLOCKS⑩晶體至3.3V的LVPECL時鐘發(fā)生器 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大?。?/td> | 233K |
| 代理商： | ICS843001BGILFT |
843001BKI
www.icst.com/products/hiperclocks.html
REV. A OCTOBER 6, 2005
9
Integrated
Circuit
Systems, Inc.
ICS843001BI
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
3.3V LVPECL C
LOCK
G
ENERATOR
PRELIMINARY
3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
LVPECL output driver circuit and termination are shown in
Figure 4.
T
o calculate worst case power dissipation into the load, use the following equations which assume a 50
Ω
load, and a termination
voltage of V
CC
- 2V.
For logic high, V
OUT
= V
OH_MAX
=
V
CC_MAX
– 0.9V
(V
CCO_MAX
- V
OH_MAX
) =
0.9V
For logic low, V
OUT
= V
OL_MAX
=
V
CC_MAX
– 1.7V
(V
CCO_MAX
- V
OL_MAX
) =
1.7V
Pd_H is power dissipation when the output drives high.
Pd_L is the power dissipation when the output drives low.
Pd_H = [(V
OH_MAX
– (V
CC_MAX
- 2V))/R
[(2V - 0.9V)/50
] * 0.9V =
19.8mW
L
] * (V
CC_MAX
- V
OH_MAX
) = [(2V - (V
CC_MAX
- V
OH_MAX
))/R
L
] * (V
CC_MAX
- V
OH_MAX
) =
Pd_L = [(V
OL_MAX
– (V
CC_MAX
- 2V))/R
[(2V - 1.7V)/50
Ω
] * 1.7V =
10.2mW
L
] * (V
CC_MAX
- V
OL_MAX
) = [(2V - (V
CC_MAX
- V
OL_MAX
))/R
L
] * (V
CC_MAX
- V
OL_MAX
) =
Total Power Dissipation per output pair = Pd_H + Pd_L =
30mW
F
IGURE
4. LVPECL D
RIVER
C
IRCUIT
AND
T
ERMINATION
Q1
V
OUT
V
CC
RL
50
V
CC
- 2V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS843001BGIT | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BI | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKI | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKILF | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKILFT | FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843001BGIT | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BI | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKI | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKILF | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843001BKILFT | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
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