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参数资料
| 型号： | DG643DY-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 18/18页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO SWITCH SPDT 16SOIC |
| 标准包装： | 2,500 |
| 功能： | 视频开关 |
| 电路： | 2 x SPDT |
| 导通状态电阻： | 15 欧姆 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 10 V ~ 18 V，±10 V ~ 15 V |
| 电流 - 电源： | 3.5mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
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 |
|---|---|
| DG646BH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:GTO Thyristors - Disc / Puk Devices |
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| DG646BH25-148 | 制造商:Dynex Semiconductor 功能描述:SCR - PHASE CONTROL THYRISTOR |
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