DG411/412/413
Vishay Siliconix
+5V
C
V
L
V
S
R
g
= 50
Ω
0 V, 2.4 V
IN
S
+ 15 V
C
C
V+
+5V
+ 15 V
C
D
V
O
V
L
V+
S
R
L
50
Ω
IN
GND
V-
C
0 V, 2.4 V
D
- 15 V
V
S
V
O
C = RF Bypass
- 15 V
GND
V-
C
Meter
HP4192A
Impedance
Analyzer
or Equivalent
Off Isolation = 20 log
Figure 6. Off Isolation
Figure 7. Source/Drain Capacitances
APPLICATIONS
Single Supply Operation:
The DG411/412/413 can be operated with unipolar supplies
from 5 V to 44 V. These devices are characterized and tested
for unipolar supply operation at 12 V to facilitate the majority
of applications. In single supply operation, V+ is tied to V
L
and V- is tied to 0 V. See Input Switching Threshold vs.
Supply Voltage curve for V
L
versus input threshold
requirments.
Summing Amplifier
When driving a high impedance, high capacitance load such
as shown in Figure 8, where the inputs to the summing
amplifier have some noise filtering, it is necessary to have
shunt switches for rapid discharge of the filter capacitor, thus
preventing offsets from occurring at the output.
R
1
V
IN 1
R
2
C
1
R
5
R
3
V
IN 2
R
4
–
V
OUT
+
C
2
R
6
DG413
Figure 8. Summing Amplifier
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see
http://www.vishay.com/ppg?70050.
www.vishay.com
8
Document Number: 70050
S-71241–Rev. E, 25-Jun-07
VISHAY [ VISHAY TELEFUNKEN ]
