®
DG441, DG442
Data Sheet
November 20, 2006
FN3281.10
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.
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
Pinout
DG441, DG442
(16 LD PDIP, SOIC, TSSOP)
TOP VIEW
IN
1
1
D
1
2
S
1
3
V- 4
GND 5
S
4
6
D
4
7
IN
4
8
16 IN
2
15 D
2
14 S
2
13 V+
12 NC
11 S
3
10 D
3
9 IN
3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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