Datasheet

Test Circuits/Timing Diagrams (continued)
MAX4780/MAX4784
0.7
ΩΩ
, Low-Voltage, Quad 2:1 Analog
Multiplexers
_______________________________________________________________________________________ 9
NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
*MAX4784 ONLY.
V+
V
OUT
V
IN
GND
V+
V
IN
V
OUT
MEAS
NETWORK
ANALYZER
50Ω 50Ω
50Ω
OFF-ISOLATION = 20log
ON-LOSS = 20log
CROSSTALK = 20log
50Ω
REF
V
OUT
V
IN
V
OUT
V
IN
A0
V+ OR GND
NC, NO
COM
10nF
MAX4780/
MAX4784
EN*
Figure 5. Off-Isolation, On-Loss, and Crosstalk
V+
GND
V+
A0
V+ OR GND
1MHz
CAPACITANCE
ANALYZER
NC, NO
COM
MAX4780/
MAX4784
EN*
*MAX4784 ONLY.
Figure 4. Capacitance
0
V+
∆ V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE-
TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.
∆ V
OUT
Q = ∆ V
OUT
✕
C
L
V
OUT
V+
V
OUT
V
GEN
R
GEN
GND
V+
A0
V+ OR GND
NC, NO
COM
MAX4780/
MAX4784
C
L
*
EN**
V
EN
*C
L
INCLUDES STRAY CAPACITANCE.
**MAX4784 ONLY.
V
EN
Figure 3. Charge Injection