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參數(shù)資料
| 型號： | GS1881-ITA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Monolithic Video Sync Separators |
| 中文描述： | 單片視頻同步分離器 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 279K |
| 代理商： | GS1881-ITA |
11
520 - 23 - 03
VIDEO
0.01μF
CH1
CH2
2
75
4
8
680k
0.1μ
6
0.1μF
CH1
VIDEO
CH2
2
75
4
8
680k
0.1μ
6
APPLICATION NOTES
(1) Choosing the Appropriate Input Coupling Capacitor to
Optimize Slicing Level and Hum Rejection
The video designer can adjust the slicing level by choosing the
value of the input coupling capacitor. The relationship between
slicing level and input coupling capacitor is described by the
following equation.
V
SLICE
= C
T = V
DROOP
C
where:
I
DIS
= clamp discharge current = 11
μ
A
T = T
LINE
- T
SYNC
= (63.5
μ
s - 4.7
μ
s)
C
C
= input coupling capacitor
I
DIS
137
127
117
107
97
87
77
S
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
INPUT COUPLING CAPACITOR (
μ
F)
Fig. 21 Slicing Level vs Input Coupling Capacitor
Figure 21 is a graphical representation of this equation and
photographs 1 and 2 show the input video waveforms
for 0.1
μ
F and 0.01
μ
F input capacitors respectively. The
advantage in choosing a smaller input coupling capacitor, is
increased hum rejection as the following analyses illustrates.
Test Circuit 1
Test Circuit 2
Photograph 2
Photograph 1
CH1
CH2
CH1
CH2
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PDF描述 |
|---|---|
| GS4881 | Monolithic Video Sync Separators |
| GS4881-CDA | Monolithic Video Sync Separators |
| GS4881-CKA | Monolithic Video Sync Separators |
| GS4881-CTA | Monolithic Video Sync Separators |
| GS4881-IDA | Monolithic Video Sync Separators |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| GS1881-ITAE3 | 制造商:Semtech Corporation 功能描述:TAPE & REEL Sync Separators |
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| GS18A_11 | 制造商:MEANWELL 制造商全稱:Mean Well Enterprises Co., Ltd. 功能描述:15~18WAC-DC Single Output Desktop |
| GS18A03 | 制造商:MEANWELL 制造商全稱:Mean Well Enterprises Co., Ltd. 功能描述:10~18WAC-DC Single Output Desktop |
| GS18A03-P1J | 功能描述:插入式交流適配器 10W 3.3V 3.0A RoHS:否 制造商:Phihong 地區(qū):Universal 安裝風格:Wall, Interchangeable Plug 輸入電壓范圍:90 VAC to 264 VAC 輸出端數(shù)量:1 輸出功率額定值:5 W 輸出電壓（通道 1）:5 V 輸出電流（通道 1）:1 A 直流輸出連接器:USB Type A 隨附/必需的交流插頭:Required 商用/醫(yī)用:Commercial 效率:Level V |
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