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| 型号： | 85301AKLFT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 85301 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC16 |
| 封装： | 3 X 3 MM, 0.95 MM HEIGHT, ROHS COMPLIANT, MO-220, VFQFN-16 |
| 文件页数： | 6/20页 |
| 文件大小： | 725K |
| 代理商： | 85301AKLFT |
IDT / ICS 2:1, LVPECL MULTIPLEXER
14
ICS85301 REV. B DECEMBER 22, 2006
ICS85301
2:1, DIFFERENTIAL-TO-LVPECL MULTIPLEXER
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 7.
To calculate worst case power dissipation into the load, use the following equations which assume a 50
load, and a termination
voltage of V
CC
- 2V.
For logic high, V
OUT
= V
OH_MAX
= V
CC_MAX
– 0.93V
(V
CC_MAX
- V
OH_MAX
) = 0.93
For logic low, V
OUT
= V
OL_MAX
= V
CC_MAX
– 1.62V
(V
CC_MAX
- V
OL_MAX
) = 1.62V
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
L
] * (V
CC_MAX
- V
OH_MAX
) = [(2V - (V
CC_MAX
- V
OH_MAX
))/R
L
] * (V
CC_MAX
- V
OH_MAX
) =
[(2V - 0.93V)/50
] * 0.93V = 19.9mW
Pd_L = [(V
OL_MAX
– (V
CC_MAX
- 2V))/R
L
] * (V
CC_MAX
- V
OL_MAX
) = [(2V - (V
CC_MAX
- V
OL_MAX
))/R
L
] * (V
CC_MAX
- V
OL_MAX
) =
[(2V - 1.62V)/50
] * 1.62V = 12.3mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 32.2mW
FIGURE 7. LVPECL DRIVER CIRCUIT AND TERMINATION
VOUT
Q1
VCC - 2V
RL
50
VCC
相关PDF资料 |
PDF描述 |
|---|---|
| 85301AGLFT | 85301 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO16 |
| 80.000MHZHC49/T/50/30/20/50PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
| 80.000MHZHC49/T/3W/50/20/20/8PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
| 80.000MHZHC49/3/5/10/30PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
| 80.000MHZHC49/3W/3/20/10/50PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 853020000 | 制造商:Molex 功能描述: |
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| 85302-0191 | 制造商:MOLEX 功能描述: |
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| 853020309 | 制造商:Molex 功能描述: |
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