1
®
FN3281.10
DG441, DG442
Monolithic, Quad SPST, CMOS Analog
Switches
The DG441 and DG442 monolithic CMOS analog switches
are drop-in replacements for the popular DG201A and
DG202 series devices. They include four independent single
pole single throw (SPST) analog switches, TTL and CMOS
compatible digital inputs, and a voltage reference for logic
thresholds.
These switches feature lower analog ON resistance (<85Ω)
and faster switch time (t
ON
<250ns) compared to the
DG201A and DG202. Charge injection has been reduced,
simplifying sample and hold applications.
The improvements in the DG441 series are made possible
by using a high voltage silicon-gate process. An epitaxial
layer prevents the latch-up associated with older CMOS
technologies. The 44V maximum voltage range permits
controlling 40V
P-P
signals. Power supplies may be single
ended from +5V to +34V, symmetrical supplies from ±5V to
±22V or asymmetrical supplies limited to a maximum
differential voltage of 44V with a V+ max of 34V or a V- max
of -25V.
The four switches are bilateral, equally matched for AC or
bidirectional signals. The ON resistance variation with
analog signals is quite low over a ±5V analog input range.
The switches in the DG441 and DG442 are identical,
differing only in the polarity of the selection logic.
Pinout
DG441, DG442
(16 LD PDIP, SOIC, TSSOP)
TOP VIEW
Features
• ON Resistance (Max). . . . . . . . . . . . . . . . . . . . . . . . . 85Ω
• Low Power Consumption (P
D
). . . . . . . . . . . . . . . <1.6mW
• Fast Switching Action
-t
ON
(Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250ns
-t
OFF
(Max, DG441). . . . . . . . . . . . . . . . . . . . . . . . 120ns
• Low Charge Injection
• Upgrade from DG201A, DG202
• TTL, CMOS Compatible
• Single or Split Supply Operation
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Audio Switching
• Battery Operated Systems
• Data Acquisition
• Hi-Rel Systems
• Sample and Hold Circuits
• Communication Systems
• Automatic Test Equipment
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
IN
1
D
1
S
1
V-
GND
S
4
IN
4
D
4
IN
2
S
2
V+
NC
S
3
D
3
IN
3
D
2
Data Sheet November 20, 2006
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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