±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
MAX4620
MAX4630
MAX4640
VGEN
RGEN
COM_
GND
V+
V+
NO_/NC_
IN
VIN
VOUT
CL
VOUT
OFF
IN
∆VOUT
ON
OFF
Q = (∆VOUT)(CL)
Figure 4. Charge Injection
SIGNAL
GENERATOR 0dBm
0 OR 2.4V
ANALYZER
RL
10nF V+
V+
COM1
IN1
NO2
GND
MAX4620
MAX4630
MAX4640
NO1
50Ω
IN2
0 OR
2.4V
COM2
NC
Figure 5. Crosstalk
Detailed Description
The MAX4620/MAX4630/MAX4640 are quad SPST
CMOS analog switches with circuitry providing ±15kV
ESD protection on the NO and NC pins. The CMOS
switch construction provides rail-to-rail signal handling
while consuming virtually no power. Each of the four
switches is independently controlled by a TTL/CMOS-
level-compatible digital input.
Applications Information
Do not exceed the absolute maximum ratings because
stresses beyond the listed ratings may cause perma-
nent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always sequence V+ on first, fol-
lowed by the logic inputs, NO/NC, or COM.
Operating Considerations for
High-Voltage Supply
The MAX4620/MAX4630/MAX4640 are capable of
+12V single-supply operation with some precautions.
The absolute maximum rating for V+ is 13V (referenced
to GND). When operating near this region, bypass V+
with a minimum 0.1µF capacitor to ground as close to
the IC as possible.
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