2
LC MOS
a
Precision Quad SPST Switches
ADG411/ADG412/ADG413
FUNCTIO NAL BLO CK D IAGRAMS
FEATURES
44 V Supply Maxim um Ratings
؎15 V Analog Signal Range
Low On Resistance (<35 ⍀)
Ultralow Pow er Dissipation (35 W)
Fast Sw itching Tim es
S1
S1
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
D1
S2
D1
S2
tON <175 ns
tOFF <145 ns
D2
S3
D2
S3
ADG411
ADG412
TTL/ CMOS Com patible
Plug-In Replacem ent for DG411/ DG412/ DG413
D3
S4
D3
S4
APPLICATIONS
Audio and Video Sw itching
Autom atic Test Equipm ent
Precision Data Acquisition
Battery Pow ered System s
Sam ple Hold System s
Com m unication System s
D4
D4
S1
IN1
D1
S2
IN2
IN3
IN4
D2
S3
ADG413
D3
S4
GENERAL D ESCRIP TIO N
T he ADG411, ADG412 and ADG413 are monolithic CMOS
devices comprising four independently selectable switches. T hey
are designed on an enhanced LC2MOS process which provides
low power dissipation yet gives high switching speed and low on
resistance.
D4
SWITCHES SHOWN FOR A LOGIC "1" INPUT
P RO D UCT H IGH LIGH TS
1. Extended Signal Range
T he on resistance profile is very flat over the full analog input
range ensuring excellent linearity and low distortion when
switching audio signals. Fast switching speed coupled with high
signal bandwidth also make the parts suitable for video signal
switching. CMOS construction ensures ultralow power dissipa-
tion making the parts ideally suited for portable and battery
powered instruments.
T he ADG411, ADG412 and ADG413 are fabricated on an
enhanced LC 2MOS, giving an increased signal range which
extends fully to the supply rails.
2. Ultralow Power Dissipation
3. Low RON
T he ADG411, ADG412 and ADG413 contain four indepen-
dent SPST switches. T he ADG411 and ADG412 differ only in
that the digital control logic is inverted. T he ADG411 switches
are turned on with a logic low on the appropriate control input,
while a logic high is required for the ADG412. T he ADG413
has two switches with digital control logic similar to that of the
ADG411 while the logic is inverted on the other two switches.
4. Break-Before-Make Switching
T his prevents channel shorting when the switches are
configured as a multiplexer.
5. Single Supply Operation
For applications where the analog signal is unipolar, the
ADG411, ADG412 and ADG413 can be operated from a
single rail power supply. T he parts are fully specified with a
single +12 V power supply and will remain functional with
single supplies as low as +5 V.
Each switch conducts equally well in both directions when ON
and each has an input signal range that extends to the supplies.
In the OFF condition, signal levels up to the supplies are
blocked. All switches exhibit break-before-make switching ac-
tion for use in multiplexer applications. Inherent in the design is
low charge injection for minimum transients when switching the
digital inputs.
REV. A
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 1998