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DG408_11 Datasheet, PDF (10/18 Pages) Vishay Siliconix – 8-Ch/Dual 4-Ch High-Performance CMOS Analog Multiplexers
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
ΔVO
ΔVO is the measured voltage due to charge transfer
error Q, when the channel turns off.
Q = CL x ΔVO
Fig. 5 - Charge Injection
VIN
VS
Rg = 50 Ω
+ 15 V
SX
V+
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kΩ
- 15 V
Off Isolation = 20 log
VOUT
VIN
Fig. 6 - Off Isolation
+ 15 V
VIN
S1
V+
VS
SX
Rg = 50 Ω
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kΩ
- 15 V
Crosstalk = 20 log
VOUT
VIN
Fig. 7 - Crosstalk
+ 15 V
VS
Rg = 50 Ω
S1
V+
A0
A1
A2
GND EN
D
V-
VO
RL
1 kΩ
- 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
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Document Number: 70062
S11-0933-Rev. J, 16-May-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