Datasheet

MAX4708/MAX4709
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
______________________________________________________________________________________ 13
50%
t
OPEN
t
R
< 20ns
t
F
< 20ns
+5V
+3V
0V
LOGIC
INPUT
V
A
SWITCH
OUTPUT
V
OUT
V
OUT
GND
V+
A0
V-
A1
A2
EN
NO1–NO8
COM
+10V
50Ω
MAX4708
1kΩ
35pF
80%
+2.4V
0V
V
A
V
EN
Figure 4. Break-Before-Make Interval
Test Circuits/Timing Diagrams (continued)
ΔV
OUT
+3V
0V
LOGIC
INPUT
V
EN
V
OUT
GND
V+
A1
V-
A0
A2
EN
COM
MAX4708
1nF
V
OUT
NO
CHANNEL
SELECT
R
S
V
S
ONOFF OFF
ΔV
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR V
CTE
WHEN THE CHANNEL TURNS OFF.
V
CTE
= ΔV
OUT X
C
L
V
EN
Figure 5. Charge Injection
V
OUT
GND
V+
A1
V-
A0
A2
NO8
COM
MAX4708
NO1
R
S
= 50Ω
V
IN
EN
10nF
R
L
75Ω
OFF-ISOLATION = 20log
V
OUT
V
IN
10nF
Figure 6. Off-Isolation
V
OUT
GND
V+
A1
V-
A0
A2
NO8
COM
MAX4708
NO2
R
G
= 50Ω
V
IN
EN
10nF
R
L
75Ω
10nF
NO1
R
1kΩ
CROSSTALK = 20log
V
OUT
V
IN
Figure 7. Crosstalk