Low Capacitance, Triple/Quad SPDT
± ±1 ꢀ/ꢁ±ꢂ ꢀ i CMOS™ Switches
ADG±ꢂ33/ADG±ꢂ34
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
1.5 pF off capacitance
0.5 pC charge injection
33 V supply range
120 Ω on resistance
ADG1233
S1A
D1
S3B
D3
S1B
Fully specified at 15 V/+12 V
3 V logic-compatible inputs
Rail-to-rail operation
S3A
S2B
D2
Break-before-make switching action
16-lead TSSOP, 20-lead TSSOP, and 4 mm × 4 mm LFCSP
Typical power consumption (<0.03 μW)
S2A
LOGIC
APPLICATIONS
IN1 IN2 IN3 EN
SWITCHES SHOWN FOR A LOGIC 1 INPUT
Audio and video routing
Automatic test equipment
Data acquisition systems
Battery-powered systems
Sample-and-hold systems
Communication systems
Figure 1.
ADG1234
S1A
D1
S4A
D4
S1B
S4B
GENERAL DESCRIPTION
S2B
D2
S3B
D3
The ADG1233 and ADG1234 are monolithic iCMOS analog
switches comprising three independently selectable single-pole,
double throw SPDT switches and four independently selectable
SPDT switches, respectively.
S2A
S3A
LOGIC
All channels exhibit break-before-make switching action
preventing momentary shorting when switching channels.
IN1 IN2 IN3 IN4 EN
SWITCHES SHOWN FOR A LOGIC 1 INPUT
EN
An
input on the ADG1233 and ADG1234 is used to
Figure 2.
enable or disable the device. When disabled, all channels are
switched off.
The iCMOS (industrial-CMOS) modular manufacturing process
combines a high voltage complementary metal-oxide semi-
conductor (CMOS) and bipolar technologies. It enables the
development of a wide range of high performance analog ICs
capable of 33 V operation in a footprint that no other generation of
high voltage parts has been able to achieve. Unlike analog ICs
using conventional CMOS processes, iCMOS components can
tolerate high supply voltages while providing increased perfor-
mance, dramatically lowered power consumption, and reduced
package size.
Fast switching speed coupled with high signal bandwidth make the
parts suitable for video signal switching. iCMOS construction
ensures ultralow power dissipation, making the parts ideally
suited for portable and battery-powered instruments.
PRODUCT HIGHLIGHTS
1. 1.5 pF off capacitance ( 15 V supply).
2. 0.5 pC charge injection.
3. 3 V logic-compatible digital input, VIH = 2.0 V, VIL = 0.8 V.
4. 16-lead TSSOP, 20-lead TSSOP, and 4 mm × 4 mm LFCSP.
The ultralow capacitance and charge injection of these multiplexers
make them ideal solutions for data acquisition and sample-and-
hold applications, where low glitch and fast settling are required.
Rev. B
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