4.5 Ω R
ON
, Triple/Quad SPDT ±5 V,
+12 V, +5 V, and +3.3 V Switches
Data Sheet
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FEATURES
4.5 Ω typical on resistance
1 Ω on-resistance flatness
Up to 206 mA continuous current
±3.3 V to ±8 V dual-supply operation
3.3 V to 16 V single-supply operation
No V
L
supply required
3 V logic-compatible inputs
Rail-to-rail operation
ADG1633
16-lead TSSOP and 16-lead, 3 mm × 3 mm LFCSP
ADG1634
20-lead TSSOP and 20-lead, 4 mm × 4 mm LFCSP
APPLICATIONS
Communication systems
Medical systems
Audio signal routing
Video signal routing
Automatic test equipment
Data acquisition systems
Battery-powered systems
Sample-and-hold systems
Relay replacements
GENERAL DESCRIPTION
The ADG1633 and ADG1634 are monolithic industrial CMOS
(iCMOS®) analog switches comprising three independently
selectable single-pole, double-throw (SPDT) switches and
four independently selectable SPDT switches, respectively.
All channels exhibit break-before-make switching action that
prevents momentary shorting when switching channels. An
EN
input on the ADG1633 (LFCSP and TSSOP packages) and
ADG1634 (LFCSP package only) is used to enable or disable
the devices. When disabled, all channels are switched off.
The ultralow on resistance and on-resistance flatness of these
switches make them ideal solutions for data acquisition and gain
switching applications, where low distortion is critical. iCMOS
construction ensures ultralow power dissipation, making the parts
ideally suited for portable and battery-powered instruments.
FUNCTIONAL BLOCK DIAGRAMS
IN1
IN2
IN3
EN
S1A
D1
S1B
S2B
D2
S2A
S3B
D3
S3A
LOGIC
ADG1633
SWITCHES SHOWN FOR
A 1 INPUT LOGIC.
08319-001
Figure 1. ADG1633 TSSOP and LFCSP
S1A
D1
S1B
IN1
IN2
S2B
S2A
D2
S4A
D4
S4B
IN4
IN3
S3B
S3A
D3
ADG1634
SWITCHES SHOWN FOR
A 1 INPUT LOGIC.
08319-002
Figure 2. ADG1634 TSSOP
S1A
D1
S1B
S2B
S2A
D2
S4A
D4
IN1 IN2 IN3 IN4
S4B
S3B
S3A
D3
ADG1634
SWITCHES SHOWN FOR
A 1 INPUT LOGIC.
LOGIC
EN
08319-003
Figure 3. ADG1634 LFCSP