MAX399 Maxim, MAX399 Datasheet - Page 10

• Manufacturer Part Number: MAX399
• Description: The MAX398/MAX399 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100Ω), which is matched to within 6Ω between channels and remains flat over the specified analog signal range (11Ω max)
• Manufacturer: Maxim

Precision, 8-Channel/Dual 4-Channel,
Low-Voltage, CMOS Analog Multiplexers
Figure 5. Charge Injection
Figure 6. Off-Isolation
Figure 8. NO/COM Capacitance
10
CHANNEL
SELECT
V
______________________________________________________________________________________
S
V
R
IN
S
= 50Ω
R
S
A2
A1
A0
GND
CHANNEL
SELECT
MAX398
A0
A1
A2
NO1
NO8
EN
+5V
V+
GND
V
EN
-5V
MAX398
10nF
V-
EN
+5V
A0
A1
COM
NO
EN
A2
V+
NO1
NO8
GND
OFF-ISOLATION = 20log
MAX398
-5V
COM
V-
10nF
+5V
V+
-5V
V-
COM
CAPACITANCE
R
ANALYZER
L
f = 1MHz
1MHz
= 1kΩ
V
OUT
V
V
OUT
Test Circuits/Timing Diagrams (continued)
IN
C
L
V
= 1000nF
OUT
V
LOGIC
INPUT
V
Figure 7. Crosstalk
OUT
EN
R
R = 1kΩ
G
= 50Ω
+3V
0
ΔV
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ΔV
OUT
V
IN
OFF
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
x C
L
A0
NO1
A1
A2
NO2
NO8
GND
MAX398
10nF
ON
EN
+5V
V+
10nF
-5V
COM
CROSSTALK = 20log
V-
OFF
R
L
= 1kΩ
V
ΔV
OUT
OUT
V
V
OUT
IN