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DG408L Datasheet, PDF (11/11 Pages) Vishay Siliconix – Precision 8-Ch/Dual 4-Ch Low Voltage Analog Multiplexers
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DG408L/409L
Vishay Siliconix
TEST CIRCUITS
Rg
Vg
Channel
Select
V+
V+
SX
EN
A0
A1
A2
GND
D
V-
V-
VO
CL
1 nF
Logic 3 V
Input
OFF
ON
0V
OFF
Switch
Output
DVO
DVO is the measured voltage due to charge transfer
error Q, when the channel turns off.
Q = CL x DVO
FIGURE 5. Charge Injection
V+
VIN
VS
Rg = 50 W
SX
V+
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kW
V-
Off Isolation = 20 log
VOUT
VIN
FIGURE 6. Off Isolation
V+
VIN
S1
V+
VS
SX
Rg = 50 W
S8
A0
A1
A2
GND EN
D
V-
VO
RL
1 kW
V-
Crosstalk = 20 log
VOUT
VIN
FIGURE 7. Crosstalk
V+
VS
Rg = 50 W
S1
V+
A0
A1
A2
GND EN
D
V-
VO
RL
1 kW
Channel
Select
V-
Insertion Loss = 20 log
VOUT
VIN
FIGURE 8. Insertion Loss
Document Number: 71342
S-03720—Rev. D, 07-Apr-03
V+
V+
A2
A1
A0
GND EN
S1
S8
D
V-
V-
Meter
HP4192A
Impedance
Analyzer
or Equivalent
f = 1 MHz
FIGURE 9. Source Drain Capacitance
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