DG411_08 Datasheet, PDF (8/9 Pages) Vishay Siliconix – Precision Monolithic Quad SPST CMOS Analog Switches

DG411/412/413
Vishay Siliconix
V_S
R_g = 50 Ω
0 V, 2.4 V
+5V
C
V_L
S
IN
GND
+ 15 V
C
V+
D
V-
C
V_O
R_L
50 Ω
- 15 V
V_S
Off Isolation = 20 log
V_O
C = RF Bypass
Figure 6. Off Isolation
+5V
C
V_L
+ 15 V
C
V+
S
IN
0 V, 2.4 V
GND
D
V-
C
Meter
HP4192A
Impedance
Analyzer
or Equivalent
- 15 V
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.
V_{IN 1}
R₁
R₂
C₁
R₅
V_{IN 2}
R₃
R₄
–
+
C₂
R₆
V_OUT
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