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參數(shù)資料
| 型號： | DG641DY-E3 |
| 廠商： | VISHAY SILICONIX |
| 元件分類： | 多路復用及模擬開關(guān) |
| 英文描述： | QUAD 1-CHANNEL, AUDIO/VIDEO SWITCH, PDSO16 |
| 封裝： | MS-012, SOIC-16 |
| 文件頁數(shù)： | 18/18頁 |
| 文件大小： | 316K |
| 代理商： | DG641DY-E3 |
Document Number: 70058
S11-0154-Rev. F, 31-Jan-11
www.vishay.com
9
Vishay Siliconix
DG641, DG642, DG643
APPLICATIONS
Board Layout
PCB layout rules for good high frequency performance must
also be observed to achieve the performance boasted by
these analog switches. Some tips for minimizing stray effects
are:
1.
Use extensive ground planes on double sided PCB,
separating adjacent signal paths. Multilayer PCB is
even better.
2.
Keep signal paths as short as practically possible,
with all channel paths of near equal length.
3.
Careful arrangement of ground connections is also
very important. Star connected system grounds
eliminate signal current, flowing through ground path
parasitic
resistance,
from
coupling
between
channels.
Figure 8 shows a 4-channel video multiplexer using a
DG641.
In Figure 9, two coax cables terminated on 75
bring two
video signals to the DG642 switch. The two drains tied
together lower the on-state capacitance. An Si582 video
amplifier drives a double terminated 75
cable. The double
terminated coax cable eliminates line reflections.
Figure 7. Supply Decoupling
+
- 3 V
GNDs
+ 15 V
DG64X
V+
V-
S1
S2
S3
S4
D1
D2
D3
D4
C1
C2
C1
C2
C1 = 10 F Tantalum
C2 = 0.1 F Ceramic
Figure 8. 4 by 1 Video Multiplexing Using the DG641
+
-
+ 15 V
V+
V-
- 3 V
TTL Channel Select
A = 2
75
250
Si582
CH1
CH2
CH3
CH4
DG641
DIS
75
75
75
75
250
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DG641DY-E3 | 制造商:Vishay Siliconix 功能描述:Analog Switch / Multiplexer (Mux) IC |
| DG641DY-T1 | 功能描述:多路器開關(guān) IC Wideband Quad SPST RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| DG641DY-T1-E3 | 功能描述:視頻開關(guān) IC SPST Analog Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| DG642 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Low On-Resistance Wideband/Video Switches |
| DG642DJ | 功能描述:視頻開關(guān) IC SPDT Analog Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
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