MAX4511 Maxim, MAX4511 Datasheet - Page 11

• Manufacturer Part Number: MAX4511
• Description: The MAX4511/MAX4512/MAX4513 are quad, single-pole/single-throw (SPST), fault-protected analog switches
• Manufacturer: Maxim

The MAX4511/MAX4512/MAX4513 operate with bipolar
supplies between ±4.5V and ±18V. The V+ and V- sup-
plies need not be symmetrical, but their difference can
not exceed the absolute maximum rating of 44V.
The MAX4511/MAX4512/MAX4513 operate from a sin-
gle supply between +9V and +36V when V- is connect-
ed to GND.
In 50Ω systems, signal response is reasonably flat up to
50MHz (see Typical Operating Characteristics). Above
Figure 2. Switch Turn-On/Turn-Off Times
Figure 3. MAX4513 Break-Before-Make Interval
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
V
IN_
V
IN_
50Ω
50Ω
IN_
IN_
High-Frequency Performance
IN_
______________________________________________________________________________________
V+
V+
MAX4513
MAX4511
MAX4512
MAX4513
GND
GND
V+
V+
NO_ OR NC_
V-
V-
COM_
COM_
COM_
V-
V-
NO_
NC_
Quad, Rail-to-Rail, Fault-Protected,
Bipolar Supplies
2k
Single Supply
2k
+10V
+10V
10pF
10pF
V
V
OUT
OUT
20MHz, the on-response has several minor peaks that
are highly layout dependent. The problem with high-fre-
quency operation is not turning the switch on, but turn-
ing it off. The off-state switch acts like a capacitor and
passes higher frequencies with less attenuation. At
10MHz, off isolation is about -42dB in 50Ω systems,
becoming worse (approximately 20dB per decade) as
frequency increases. Higher circuit impedances also
make off isolation worse. Adjacent channel attenuation
is about 3dB above that of a bare IC socket and is due
entirely to capacitive coupling.
SPST Analog Switches
V
V
OUT
IN_
V
V
+10V
NO_
V
IN_
Test Circuits/Timing Diagrams
OUT
V+
0V
0V
, V
NC_
V+
0V
0V
t
OFF
50%
50%
90%
t
OPEN
80%
90%
t
ON
t
t
R
F
< 5ns
< 5ns
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