44 V Supply Maximum Ratings
15 V Analog Signal Range
Low On Resistance (<24 )
Ultralow Power Dissipation (3.9 W)
Low Leakage (<0.25 nA)
Fast Switching Times
Break-Before-Make Switching Action
Plug-in Replacement for DG411/DG412/DG413
Audio and Video Switching
Automatic Test Equipment
Precision Data Acquisition
Battery Powered Systems
Sample Hold Systems
Precision Quad SPST Switches
FUNCTIONAL BLOCK DIAGRAMS
SWITCHES SHOWN FOR A LOGIC "1" INPUT
The ADG431, ADG432 and ADG433 are monolithic CMOS
devices comprising four independently selectable switches. They
are designed on an enhanced LC
MOS process which provides
low power dissipation yet gives high switching speed and low on
The 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
The ADG431, ADG432 and ADG433 contain four indepen-
dent SPST switches. The ADG431 and ADG432 differ only in
that the digital control logic is inverted. The ADG431 switches
are turned on with a logic low on the appropriate control input,
while a logic high is required for the ADG432. The ADG433
has two switches with digital control logic similar to that of the
ADG431 while the logic is inverted on the other two switches.
Each switch conducts equally well in both directions when ON
and has an input signal range which extends to the supplies. In
the OFF condition, signal levels up to the supplies are blocked.
All switches exhibit break before make switching action for use
in multiplexer applications. Inherent in the design is low charge
injection for minimum transients when switching the digital inputs.
1. Extended Signal Range
The ADG431, ADG432 and ADG433 are fabricated on an
MOS process giving an increased signal range
which extends fully to the supply rails.
2. Ultralow Power Dissipation
3. Low R
4. Break-Before-Make Switching
This prevents channel shorting when the switches are config-
ured as a multiplexer.
5. Single Supply Operation
For applications where the analog signal is unipolar, the
ADG431, ADG432 and ADG433 can be operated from a
single rail power supply. The parts are fully specified with a
single +12 V power supply and will remain functional with
single supplies as low as +5 V.
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© Analog Devices, Inc., 1998