Datasheet

MAX14778
Dual ±25V Above- and Below-the-Rails
4:1 Analog Multiplexer
6Maxim Integrated
Test Circuits/Timing Diagrams (continued)
Figure 5. Charge Injection
Figure 6. Off-Isolation, -3dB Bandwidth, and Crosstalk
C
L
= 1 n F
V
OUT
ACOM
BCOM
ENA
ENB
A_
B_
V
DD
GND
LOGIC
INPUT
+5V
MAX14778
0V
V
OUT
+5V
ON OFFOFF
DV
OUT
Q = C
L
x DV
OUT
LOGIC
INPUT
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN ACOM AND "OFF" A_ TERMINAL ON EACH MULTIPLEXER.
-3dBW IS MEASURED BETWEEN ACOM AND "ON" A_ TERMINAL ON EACH MULTIPLEXER.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH MULTIPLEXER IS REVERSED; WORST VALUES ARE RECORDED.
V
DD
V
OUT
ENA
SA_
A0
ACOM
V
IN
OFF-ISOLATION = 20log
V
OUT
V
IN
ON-LOSS = 20log
V
OUT
V
IN
CROSSTALK = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50
I
50I
50I
50
I
MEAS REF
0V OR V
DD
50I
MAX14778