Quad SPDT Switch
Data Sheet
ADG333A
Rev. B Document Feedback
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FEATURES
44 V supply maximum ratings
V
SS
to V
DD
analog signal range
Low on resistance (45 Ω max)
Low ∆R
ON
(5 Ω max)
Low R
ON
match (4 Ω max)
Low power dissipation
Fast switching times
t
ON
< 175 ns
t
OFF
< 145 ns
Low leakage currents (5 nA max)
Low charge injection (10 pC max)
Break-before-make switching action
APPLICATIONS
Audio and video switching
Battery-powered systems
Test equipment
Communication systems
FUNCTIONAL BLOCK DIAGRAM
S1A
D1
S1B
IN1
IN2
S2B
D2
S2A
S3A
D3
S3B
IN3
IN4
S4B
D4
S4A
ADG333A
SWITCHES SHOWN FOR A LOGIC 1 INPUT
01212-001
Figure 1.
GENERAL DESCRIPTION
The ADG333A is a monolithic complementary metal-oxide
semiconductor (CMOS) device comprising four independently
selectable single-pole, double-throw (SPDT) switches. It is
designed on a linear compatible CMOS (LC
2
MOS) process,
which provides low power dissipation yet achieves a high
switching speed and a low on resistance.
The on-resistance profile is very flat over the full analog input
range, ensuring good linearity and low distortion when switching
audio signals. High switching speed also makes the device suitable
for video signal switching. CMOS construction ensures ultralow
power dissipation, making the device ideally suited for portable,
battery-powered instruments.
When they are on, each switch conducts equally well in both
directions and has an input signal range that extends to the
power 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. Low charge
inject is inherent in the design.
PRODUCT HIGHLIGHTS
1. Extended signal range. The ADG333A is fabricated on an
enhanced LC
2
MOS process, giving an increased signal
range which extends to the supply rails.
2. Low power dissipation.
3. Low R
ON
.
4. Single-supply operation. For applications in which the
analog signal is unipolar, the ADG333A can be operated
from a single rail power supply. The device is fully
specified with a single 12 V supply.
