Datasheet

MAX4598
Low-Voltage, Combination Single-Ended
8-to-1/Differential 4-to-1 Multiplexer
10 ______________________________________________________________________________________
Test Circuits/Timing Diagrams (continued)
50%
50%
t
OFF
t
R
< 20ns
t
F
< 20ns
V+
0V
0V
V
EN
V
OUT
+5V
V
OUT
-5V
GND
V+
NLATCH
A1
V-
A0
EN
LATCH
A3
NO1
NO2–NO8
COMA
+3V
50Ω
MAX4598
1k
35pF
A2
90%90%
t
ON
V
EN
Figure 3. Enable Switching Time
∆V
OUT
V+
0V
LOGIC
INPUT
V
EN
+5V
V
COM
-5V
GND
V+NLATCH
A1
V-
A0
EN
COMA
MAX4598
C
L
1nF
V
COM
NO
CHANNEL
SELECT
R
S
V
S
OFFON ON
∆V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = (∆V
OUT
) (C
L
)
A2
A3
V
EN
Figure 4. Charge Injection
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM AND “OFF” TERMINAL ON EACH SWITCH.
ON LOSS IS MEASURED BETWEEN COM AND “ON” TERMINAL ON EACH SWITCH.
NOTES:
+5V
V+
V+
V
OUT
GND
V-
LATCH
-5V
10nF
V-
A_
EN
NLATCH
NO_
COM_
V
IN
MAX4598
OFF-ISOLATION = 20log
V
OUT
V
IN
CROSSTALK = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS. REF
10nF
Figure 5. Off-Isolation/Crosstalk