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参数资料
| 型号： | DG641DY-E3 |
| 厂商： | VISHAY SILICONIX |
| 元件分类： | 多路复用及模拟开关 |
| 英文描述： | QUAD 1-CHANNEL, AUDIO/VIDEO SWITCH, PDSO16 |
| 封装： | MS-012, SOIC-16 |
| 文件页数： | 18/18页 |
| 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| DG641DY-E3 | 制造商:Vishay Siliconix 功能描述:Analog Switch / Multiplexer (Mux) IC |
| DG641DY-T1 | 功能描述:多路器开关 IC Wideband Quad SPST RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| DG641DY-T1-E3 | 功能描述:视频开关 IC SPST Analog Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| DG642 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Low On-Resistance Wideband/Video Switches |
| DG642DJ | 功能描述:视频开关 IC SPDT Analog Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
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