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參數(shù)資料
| 型號： | PACVGA203QR |
| 廠商： | California Micro Devices Corporation |
| 英文描述： | VGA Port Companion Circuit |
| 中文描述： | VGA端口伴侶電路 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 168K |
| 代理商： | PACVGA203QR |
2004 California Micro Devices Corp. All rights reserved.
6
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
12/07/04
PACVGA203
Test Circuit Information
Average Current through V
CC
4 (I
CC
4)
The circuit in
Figure 1
was used to characterize I
CC
4 current as SYNC_IN signal frequency varies. A square wave
signal was connected to the input of one of the SYNC buffers (i.e. pin 19 or pin 21). The frequency of this signal
was varied between 0 and 100 kHz. The risetime and falltime was kept constant at 10ns. Three different values of
C1 were used: 0pF, 50pF and 100pF. The results are plotted in
Figure 2
.
Figure 1. Sync Buffer I
CC
4 Test Circuit
Figure 2. I
CC
4 vs. SYNC_IN Frequency Performance Data
0V
V
CC
4
+5V
SYNC_IN
I
CC
4
C1
SYNC_OUT
3.3V
I
CC4
vs. SYNC_IN Frequency
0
10
20
30
40
50
60
70
80
90
100
0
20
40
60
80
100
Frequency, kHz
I
C
,
100pF
50pF
0pF
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