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DG449 Datasheet(PDF) 7 Page - Vishay Siliconix

Part # DG449
Description  High Voltage Single SPDT Analog Switch in SOT23-8
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

DG449 Datasheet(HTML) 7 Page - Vishay Siliconix

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Document Number: 73897
S11-0097-Rev. B, 24-Jan-11
www.vishay.com
7
Vishay Siliconix
DG449
TYPICAL CHARACTERISTICS (TA = 25 °C, unless otherwise noted)
TEST CIRCUITS
VO is the steady state output with the switch on.
Switching Threshold vs. Supply Voltage
0
1.0
1.5
Supply Voltage (V)
20
15
10
5
0
25
0.5
3.0
2.5
2.0
30
Charge Injection vs. Analog Voltage
- 50
- 40
- 30
- 20
- 10
0
V
, V
- Analog Voltage (V)
- 3
- 6
- 9
- 12
- 15
0
3
50
40
30
20
10
15
12
9
6
NO
NC
V+ = + 12 V
V ± = ± 15 V
Figure 1. Switching Time
CL (includes fixture and stray capacitance)
RL
RL + rON
VO = Vi
V-
IN
NO or NC
COM
CL
35 pF
-15 V
GND
VO
Vi
V+
RL
300
+ 15 V
0 V
Logic
Input
Switch
Input
Switch
Output
3 V
50 %
0 V
VO
VS
tr < 20 ns
tf < 20 ns
tOFF
tON
90 %
Note:
Logic input waveform is inverted for switches that have the
opposite logic sense.
Figure 2. Charge Injection
CL
1 nF
COM
Rgen
VO
V+
NO or NC
V-
3 V
IN
- 15 V
GND
+ 15 V
OFF
ON
OFF
VO
VO
IN
Q =
VO x CL
Vgen


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