Datasheet

MAX4518/MAX4519
Precision, 4-Channel/Dual 2-Channel,
Low-Voltage, CMOS Analog Multiplexers
10 ______________________________________________________________________________________
∆V
OUT
+3V
0V
LOGIC
INPUT
V
EN
+5V
V
OUT
-5V
GND
V+
A1
V-
A0
EN
COM
MAX4518
MAX4519
C
L
= 1000nF
V
OUT
NO
CHANNEL
SELECT
R
S
V
S
ONOFF OFF
∆V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V
OUT
x C
L
V
EN
Figure 5. Charge Injection
_________________________________Test Circuits/Timing Diagrams (continued)
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.
CROSSTALK IS MEASURED BETWEEN COMA AND COMB
TERMINALS ON EACH DEVICE.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
NOTES:
V+
V+
V+
V
OUT
GND
V-
V-
V+
A
EN
NO
COM
V
IN
MAX4518
MAX4519
OFF ISOLATION = 20log
V
OUT
V
IN
ON LOSS = 20log
V
OUT
V
IN
CROSSTALK = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS. REF
10nF
10nF
+5V
-5V
GND
V+
A2
V-
A1
A0
NO8
MAX4518
MAX4519
CHANNEL
SELECT
NO1
COM
EN
1MHz
CAPACITANCE
ANALYZER
f = 1MHz
Figure 6. Off Isolation, On Loss, Crosstalk
Figure 7. NO/COM Capacitance