廬
ISL43120, ISL43121, ISL43122, ISL43210
Data Sheet
June 2003
FN6033.1
Low-Voltage, Single Supply, Dual SPST,
SPDT Analog Switches
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鈥?low power consumption (5碌W), low
leakage currents (100pA max), and fast switching speeds
(t
ON
= 28ns, t
OFF
= 20ns). Cell phones, for example, often
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 鈥渕ux-in鈥?additional functionality while
reducing ASIC design risk. Some of the smallest packages
are available, alleviating board space limitations, and making
Intersil鈥檚 newest line of low-voltage switches an ideal solution.
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.
TABLE 1. FEATURES AT A GLANCE
ISL43120 ISL43121 ISL43122
Number of
Switches
SW 1 / SW 2
3.3V R
ON
3.3V t
ON
/t
OFF
5V R
ON
5V t
ON
/t
OFF
12V R
ON
12V t
ON
/t
OFF
Packages
32鈩?/div>
32鈩?/div>
32鈩?/div>
2
NO/NO
2
NC/NC
2
NO/NC
ISL43210
1
SPDT or
2 x 1 MUX
32鈩?/div>
40ns /20ns
19鈩?/div>
28ns/20ns
11鈩?/div>
25ns/17ns
6 Ld SOT-23
Features
鈥?Fully specified at 12V, 5V, and 3.3V supplies for 10%
tolerances
鈥?ON resistance (R
ON
) . . . . . . . . . . . . . . . . . . . . . . . . . 19鈩?/div>
鈥?R
ON
matching between channels . . . . . . . . . . . . . . . . . . <1鈩?/div>
鈥?Low charge injection . . . . . . . . . . . . . . . . . . . . . . . 5pC (Max)
鈥?Single supply operation . . . . . . . . . . . . . . . . . +2.7V to +12V
鈥?Low power consumption (P
D
) . . . . . . . . . . . . . . . . . . . .<5碌W
鈥?Low leakage current. . . . . . . . . . . . . . . . . . . . . . . . . 10nA
鈥?Fast switching action
- t
ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28ns
- t
OFF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns
鈥?Guaranteed break-before-make (ISL43122/ISL43210
only)
鈥?Minimum 2000V ESD protection per method 3015.7
鈥?TTL, CMOS compatible
鈥?Available in SOT-23 packaging
Applications
鈥?Battery powered, handheld, and portable equipment
- Cellular/mobile phones
- Pagers
- Laptops, notebooks, palmtops
鈥?Communications systems
- Radios, ADSL Modems
- PBX, PABX
鈥?Test & measurement equipment
- Ultrasound
- Computerized Tomography (CT) Scanner
- Magnetic Resonance Image (MRI)
- Position Emission Tomography (PET) Scanner
- Electrocardiograph
鈥?Heads-up displays
鈥?Audio and video switching
40ns/20ns 40ns/20ns 40ns/20ns
19鈩?/div>
19鈩?/div>
19鈩?/div>
28ns/20ns 28ns/20ns 28ns/20ns
11鈩?/div>
11鈩?/div>
11鈩?/div>
25ns/17ns 25ns/17ns 25ns/17ns
8 Ld SOT-23
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
鈥?Application Note AN557 鈥淩ecommended Test Procedures
for Analog Switches鈥?/div>
鈥?Various circuits
- +3V/+5V DACs and ADCs
- Sample and hold circuits
- Digital filters
- Operational amplifier gain switching networks
- High frequency analog switching
- High speed multiplexing
- Integrator reset circuits
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2003. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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