5962-9073102M2A Datasheet, PDF (8/9 Pages) Vishay Siliconix – Precision Monolithic Quad SPST CMOS Analog Switches

DG411/412/413
Vishay Siliconix
TEST CIRCUITS
V_S
R_g = 50 W
0V, 2.4 V
+5 V
C
V_L
S
IN
GND
+15 V
C
V+
D
V_O
V–
C
R_L
50 W
–15 V
V_S
Off Isolation = 20 log
V_O
C = RF Bypass
FIGURE 6. Off Isolation
+5 V
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}
V_{IN 2}
www.vishay.com S FaxBack 408-970-5600
4-8
R₁
R₂
C₁
R₃
R₄
DG413
C₂
R₆
FIGURE 8. Summing Amplifier
R₅
–
+
V_OUT
Document Number: 70050
S-52433—Rev. D, 06-Sep-99