DG418DY Vishay, DG418DY Datasheet - Page 9

• Manufacturer Part Number: DG418DY
• Description: Analog Switch Single SPST 8-Pin SOIC N
• Manufacturer: Vishay
• Type: Analog Switchr

Specifications of DG418DY

• Package: 8SOIC N
• Maximum On Resistance: 45@±13.5V Ohm
• Maximum High Level Output Current: 30 mA
• Maximum Turn-off Time: 145@±15V ns
• Maximum Turn-on Time: 175@±15V ns
• Switch Architecture: SPST
• Power Supply Type: Single|Dual

TEST CIRCUITS
APPLICATIONS
Switched Signal Powers Analog Switch
The analog switch in Figure 10 derives power from its input
signal, provided the input signal amplitude exceeds 4 V and
its frequency exceeds 1 kHz.
This circuit is useful when signals have to be routed to either
of two remote loads. Only three conductors are required: one
for the signal to be switched, one for the control signal and a
common return.
Document Number: 70051
S10-1528-Rev. G, 19-Jul-10
0 V, 2.4 V
0 V, 2.4 V
C
C
DG417/418
IN
IN
+ 5 V
GND
GND
V
V
L
L
+ 15 V
- 15 V
V-
V+
D
D
S
S
Figure 10. Switched Signal Powers Remote SPDT Analog Switch
Control
Input
C
C
C
C
D
1
Figure 9. Source/Drain Capacitances
D
IN
or Equivalent
Impedance
GND
HP4192A
f = 1 MHz
f = 1 MHz
Analyzer
V+
Meter
DG419
V
V-
L
S
S
1
2
0 V, 2.4 V
0 V, 2.4 V
A positive input pulse turns on the clamping diode D
charges C
chip; operation is satisfactory because the switch requires
less than 1 µA of stand-by supply current. Loading of the
signal source is imperceptible. The DG419’s on-resistance is
a low 100  for a 5 V input signal.
C
C
R
10
C
0.01 µF
L1
1
+ 15 V
IN
IN
k
DG419
1
. The charge stored on C
GND
GND
V+
V+
D
D
S
S
2
2
2
2
R
10
DG417, DG418, DG419
NC
NC
L2
k
V
OUT
- 15 V
V-
S
S
D
D
1
1
1
1
C
C
Vishay Siliconix
1
is used to power the
or Equivalent
or Equivalent
www.vishay.com
Impedance
Impedance
HP4192A
HP4192A
f = 1 MHz
f = 1 MHz
Analyzer
Analyzer
Meter
Meter
1
and
9