Vishay Siliconix
DG447, DG448
www.vishay.com
6
Document Number: 73854
S11-1336-Rev. D, 04-Jul-11
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TYPICAL CHARACTERISTICS (T
A
= 25 °C, unless otherwise noted)
TEST CIRCUITS
V
O
is the steady state output with the switch on.
Charge Injection vs. Analog Voltage
(Measured at COM pin)
Input Switching Threshold vs. Supply Voltage
Q
inj
- Charge Injection (pC)
Analog Voltage (V)
- 60
- 40
- 20
0
20
40
60
80
100
120
140
160
- 15 - 10 - 5 0 5 10 15
C
L
= 10 nF
V+ = + 15 V
V- = - 15 V
V+ = + 12 V
V- = - 12 V
V+ = + 12 V
V- = 0 V
0.5
0.7
1.1
1.3
Vth (V)
V+ (V)
25
2015
105
30
0.9
1.9
1.7
1.5
2.1
2.5
2.3
Charge Injection vs. Analog Voltage
(Measured at NC or NO pin)
Q
inj
- Charge Injection (pC)
Analog Voltage (V)
- 400
- 350
- 300
- 250
- 200
- 150
- 100
- 50
0
50
100
150
- 15 - 10 -5 0 5 10 15
C
L
= 10 nF
V+ = + 12 V
V- = 0 V
V+ = + 12 V
V- = - 12 V
V+ = + 15 V
V- = - 15 V
Figure 1. Switching Time
C
L
(includes fixture and stray capacitance)
R
L
R
L
+ r
ON
V
O
= V
S
V -
IN
NO/NC
COM
C
L
35 pF
- 15 V
GND
V
O
10 V
V +
R
L
300 Ω
+ 15 V
0 V
Logic
Input
Switch
Input
Switch
Output
3 V
50 %
0 V
V
O
V
S
t
r
< 20 ns
t
f
< 20 ns
t
OFF
t
ON
90 %
Note: Logic input waveform is inverted for switches that have the
opposite logic sense.
