DG308A/DG309
Vishay Siliconix
TEST CIRCUITS
+15 V
V+
V
S
= +3 V
S
IN
12 V
GND
V–
R
L
1 kW
C
L
35 pF
Switch
Output
–15 V
V
O
= V
S
R
L
R
L
+ r
DS(on)
V
O
t
ON
90%
D
V
O
Logic
Input
12 V
50%
0V
t
OFF
t
r
<20 ns
t
f
<20 ns
FIGURE 2.
Switching Time
APPLICATIONS
Single Supply Operation
The DG308A and DG309 will switch positive analog signals
while using a single positive supply. This will allow use in many
applications where only one supply is available. The trade-offs
or performance given up while using single supplies are:
1) increased r
DS(on)
and 2) slower switching speed. As stated
in the absolute maximum ratings section of the data sheet, the
analog voltage should not go above or below the supply
voltages which in single supply operation are V+ and 0 V.
Document Number: 70046
S-52882—Rev. E, 28-Apr-97
www.vishay.com
S
FaxBack 408-970-5600
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