Datasheet

MAX4624/MAX4625
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
8 _______________________________________________________________________________________
LOGIC
INPUT
0.8
•
V
OUT
0.8
•
V
OUT
V
INH
V
INL
V
NC
V
NC
V
NO
V
NQ
t
MBB
LOGIC
INPUT
R
L
50Ω
R
L
50Ω
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO
NC
V
COM
V+
V+
C
L
35pF
C
L
35pF
MAX4625
Figure 3b. Make-Before-Break Interval (MAX4625 only)
V
GEN
GND
COM
C
L
V
OUT
V+
V
OUT
IN
OFF
ON
OFF
∆
V
OUT
Q = (
∆
V
OUT
)(C
L
)
NC
OR NO
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF
ON
OFF
IN
V
INL
TO V
INH
V+
R
GEN
IN
MAX4624
MAX4625
Figure 4. Charge Injection
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
+5V
V
OUT
V+
IN
NC
COM
NO
V
IN
MAX4624
MAX4625
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
0V OR V+
50Ω
GND
Figure 5. On-Loss, Off-Isolation, and Crosstalk
Test Circuits/Timing Diagrams (continued)