ISL43120, ISL43121, ISL43122, ISL43210
®
Data Sheet
June 2003
FN6033.1
Low-Voltage, Single Supply, Dual SPST,
SPDT Analog Switches
Features
• Fully specified at 12V, 5V, and 3.3V supplies for 10%
tolerances
The Intersil ISL43120, ISL43121, ISL43122 and ISL43210
devices are precision, bidirectional, dual analog switches
designed to operate from a single +2.7V to +12V supply.
Targeted applications include battery powered equipment that
benefit from the devices’ low power consumption (5µW), low
leakage currents (100pA max), and fast switching speeds
• ON resistance (R ) . . . . . . . . . . . . . . . . . . . . . . . . . 19Ω
ON
• R
ON
matching between channels . . . . . . . . . . . . . . . . . .<1Ω
• Low charge injection. . . . . . . . . . . . . . . . . . . . . . . 5pC (Max)
• Single supply operation . . . . . . . . . . . . . . . . . +2.7V to +12V
(t
= 28ns, t = 20ns). Cell phones, for example, often
ON
OFF
face ASIC functionality limitations. The number of analog
input or GPIO pins may be limited and digital geometries are
not well suited to analog switch performance. This family of
parts may be used to “mux-in” additional functionality while
reducing ASIC design risk. Some of the smallest packages
are available, alleviating board space limitations, and making
Intersil’s newest line of low-voltage switches an ideal solution.
• Low power consumption (P ) . . . . . . . . . . . . . . . . . . . .<5µW
D
• Low leakage current. . . . . . . . . . . . . . . . . . . . . . . . . 10nA
• Fast switching action
- t
- t
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28ns
ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns
OFF
• Guaranteed break-before-make (ISL43122/ISL43210
only)
The ISL43120, ISL43121, ISL43122 are dual single-
pole/single-throw (SPST) devices. The ISL43120 has two
normally open (NO) switches; the ISL43121 has two normally
closed (NC) switches; the ISL43122 has one NO and one NC
switch and can be used as an SPDT. The ISL43210 is a
committed SPDT, which is perfect for use in 2-to-1 multiplexer
applications.
• Minimum 2000V ESD protection per method 3015.7
• TTL, CMOS compatible
• Available in SOT-23 packaging
Applications
• Battery powered, handheld, and portable equipment
- Cellular/mobile phones
TABLE 1. FEATURES AT A GLANCE
ISL43120 ISL43121 ISL43122 ISL43210
- Pagers
Number of
Switches
2
2
2
1
- Laptops, notebooks, palmtops
• Communications systems
- Radios, ADSL Modems
- PBX, PABX
NO/NO
32Ω
NC/NC
32Ω
NO/NC
32Ω
SPDT or
2 x 1 MUX
SW 1 / SW 2
3.3V R
ON
32Ω
• Test & measurement equipment
- Ultrasound
3.3V t /t
ON OFF
40ns/20ns 40ns/20ns 40ns/20ns 40ns /20ns
19Ω 19Ω 19Ω 19Ω
28ns/20ns 28ns/20ns 28ns/20ns 28ns/20ns
11Ω 11Ω 11Ω 11Ω
25ns/17ns 25ns/17ns 25ns/17ns 25ns/17ns
8 Ld SOT-23 6 Ld SOT-23
5V R
ON
- Computerized Tomography (CT) Scanner
- Magnetic Resonance Image (MRI)
- Position Emission Tomography (PET) Scanner
- Electrocardiograph
5V t /t
ON OFF
12V R
ON
12V t /t
ON OFF
• Heads-up displays
Packages
• Audio and video switching
Related Literature
• Various circuits
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
- +3V/+5V DACs and ADCs
- Sample and hold circuits
- Digital filters
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
- Operational amplifier gain switching networks
- High frequency analog switching
- High speed multiplexing
- Integrator reset circuits
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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