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參數(shù)資料
| 型號： | EVM142AHF |
| 廠商： | Semtech Corporation |
| 英文描述： | Per Pin timing Deskew w 4x2 Cross Point Switch |
| 中文描述： | 每個引腳的時間糾偏瓦特4x2交叉點開關(guān) |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 179K |
| 代理商： | EVM142AHF |
13
2000 Semtech Corp.
www.semtech.com
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information
(continued)
Edge142
EL11 Clock Spreader Tpd vs. 1%-99% Duty Cycle
Duty Cycle [%] (Period=100 ns)
E
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
10
20
30
40
50
60
70
80
90
100
Tpd+ Error
Tpd- Error
Edge 142 Tpd+ vs. 1%-99% Duty Cycle
REXT2=2.94K
Duty Cycle [%] (Period=100 ns)
E
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
10
20
30
40
50
60
70
80
90 100
Tpd+ Error, +0.1V
Tpd+ Error, -0.1V
Tpd+ Error, -0.3V
Tpd+ Error, -0.7V
Tpd+ Error, -0.9V
Tpd+ Error, -1.1V
Tpd+ Error, -1.3V
Edge 142 Tpd- vs. 1%-99% Duty Cycle
REXT2=2.94K
Duty Cycle [%] (Period=100 ns)
E
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
10
20
30
40
50
60
70
80
90 100
Tpd- Error, +0.1V
Tpd- Error, -0.1V
Tpd- Error, -0.3V
Tpd- Error, -0.7V
Tpd- Error, -0.9V
Tpd- Error, -1.1V
Tpd- Error, -1.3V
Prop Delay vs. Duty Cycle
The 142 shows very little change in propagation delay
vs. input duty cycle. The following three charts show
the variation in the prop delay of a rising edge and a
falling edge as the duty cycle is varied from 1% to 99%.
Since the input signal period is 100 ns, a 1% duty cycle
corresponds to a 1 ns positive input pulse. A 99% duty
cycle corresponds to a 1 ns negative input pulse.
The first chart shows the Motorola 10EL11 clock
spreader timing error for both the rising and falling edge.
This information is used as a reference to compare the
142 against.
The second and third charts show the 142 under identical
conditions. The data is broken out into one chart for the
rising edge and a separate chart for the falling edge. In
addition, the timing error is listed over the entire delay
range of the 142.
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