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DG642 Datasheet(PDF) 7 Page - Vishay Siliconix

Part # DG642
Description  Low On-Resistance Wideband/Video Switches
PDF  10 Pages
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

DG642 Datasheet(HTML) 7 Page - Vishay Siliconix

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DG641/642/643
Vishay Siliconix
Document Number: 70058
S-52433—Rev. E, 06-Sep-99
www.vishay.com
S FaxBack 408-970-5600
4-7
TEST CIRCUITS
FIGURE 2. Switching Time
FIGURE 3. Charge Injection
3 V
0
90%
90%
50%
tOFF
tON
tr <20 ns
tf <20 ns
Logic
Input
Switch
Output
ON
ON
OFF
VO
DVO
INX
DVO = measured voltage error due to charge injection
The charge injection in coulombs is Q = CL x DVO
FIGURE 4. Off Isolation
3 V
V–
V+
IN
S
CL
35 pF
D
3 V
RL
1 k
W
VO
–3 V
GND
+15 V
CL
1000 pF
3 V
Vg
VO
D
V+
Rg
S
IN
V–
–3 V
GND
+15 V
S
IN
RL
D
Rg = 50 W
VS
VO
0V, 2.4 V
Off Isolation = 20 log
VS
VO
V+
–3 V
GND
V–
C
C
+15 V



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