MAX4708 Maxim, MAX4708 Datasheet - Page 13

• Manufacturer Part Number: MAX4708
• Description: The MAX4708/MAX4709 8-to-1 and dual 4-to-1 fault-protected multiplexers are pin compatible with the industry-standard DG508/DG509
• Manufacturer: Maxim

Figure 4. Break-Before-Make Interval
Figure 5. Charge Injection
Figure 6. Off-Isolation
V
S
V
R
IN
S
V
= 50Ω
A
R
+2.4V
S
50Ω
CHANNEL
SELECT
V
EN
______________________________________________________________________________________
A0
A1
A2
NO1
NO8
EN
A0
A1
A2
GND
V
GND
EN
MAX4708
10nF
EN
MAX4708
V+
A0
NO
EN
A1
A2
V+
GND
OFF-ISOLATION = 20log
10nF
COM
V-
MAX4708
NO1–NO8
V-
COM
V+
V-
R
75Ω
1kΩ
L
COM
V
OUT
+10V
V
V
Fault-Protected, Single 8-to-1/
OUT
IN
Test Circuits/Timing Diagrams (continued)
1nF
35pF
V
OUT
V
OUT
Dual 4-to-1 Multiplexers
V
LOGIC
INPUT
V
OUT
EN
Figure 7. Crosstalk
+3V
0V
R
SWITCH
OUTPUT
V
R
1kΩ
LOGIC
INPUT
V
G
ΔV
ERROR V
V
OUT
A
= 50Ω
CTE
OUT
= ΔV
OFF
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
+5V
+3V
V
CTE
IN
0V
0V
OUT X
WHEN THE CHANNEL TURNS OFF.
C
L
A0
A1
A2
NO1
NO2
NO8
GND
50%
MAX4708
ON
10nF
EN
V+
10nF
COM
CROSSTALK = 20log
80%
V-
t
OPEN
R
75Ω
t
t
R
F
L
OFF
< 20ns
V
< 20ns
OUT
ΔV
V
V
OUT
IN
OUT
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