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| DG408_10 Datasheet, PDF (11/13 Pages) Vishay Siliconix – 8-Ch/Dual 4-Ch High-Performance CMOS Analog Multiplexers | |||
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DG408, DG409
Vishay Siliconix
TEST CIRCUITS
Rg
Channel
Select
SX
EN
A0
A1
A2
GND
+ 15 V
V+
D
V-
- 15 V
VO
CL
10 nF
Logic 3 V
Input
OFF
ON
0V
OFF
Switch
Output
ïVO
ïVO is the measured voltage due to charge transfer
error Q, when the channel turns off.
Q = CL x ïVO
Fig. 5 - Charge Injection
VIN
VS
Rg = 50 ï
+ 15 V
SX
V+
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kï
- 15 V
Off Isolation = 20 log
VOUT
VIN
Fig. 6 - Off Isolation
+ 15 V
VIN
S1
V+
VS
SX
Rg = 50 ï
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kï
- 15 V
Crosstalk = 20 log
VOUT
VIN
Fig. 7 - Crosstalk
+ 15 V
VS
Rg = 50 ï
S1
V+
A0
A1
A2
GND EN
D
V-
VO
RL
1 kï
- 15 V
Insertion Loss = 20 log
VOUT
VIN
Fig. 8 - Insertion Loss
Channel
Select
+ 15 V
V+
A2
A1
A0
GND EN
S1
S8
D
V-
- 15 V
Meter
HP4192A
Impedance
Analyzer
or Equivalent
f = 1 MHz
Fig. 9 - Source Drain Capacitance
Document Number: 70062
S10-1474-Rev. I, 05-Jul-10
www.vishay.com
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