ISL43120_07 Datasheet, PDF (1/12 Pages) Intersil Corporation – Low-Voltage, Single Supply, Dual SPST Analog Switches

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Data Sheet
ISL43120, ISL43121, ISL43122
October 18, 2007
FN6033.5
Low-Voltage, Single Supply, Dual SPST
Analog Switches
The Intersil ISL43120, ISL43121 and ISL43122 devices are
precision, bidirectional, dual analog SPST 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 (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 “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.
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.
TABLE 1. FEATURES AT A GLANCE
ISL43120 ISL43121 ISL43122
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
NO/NO
32Ω
40ns/20ns
19Ω
28ns/20ns
11Ω
25ns/17ns
NC/NC
32Ω
40ns/20ns
19Ω
28ns/20ns
11Ω
25ns/17ns
8 Ld SOT-23
NO/NC
32Ω
40ns/20ns
19Ω
28ns/20ns
11Ω
25ns/17ns
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
Features
• Fully specified at 12V, 5V, and 3.3V supplies for 10%
tolerances
• ON-resistance (r_ON) . . . . . . . . . . . . . . . . . . . . . . . . . . 19Ω
• r_ON matching between channels . . . . . . . . . . . . . . . . . . . <1Ω
• Low charge injection . . . . . . . . . . . . . . . . . . . . . . . 5pC (Max)
• Single supply operation . . . . . . . . . . . . . . . . . +2.7V to +12V
• Low power consumption (P_D) . . . . . . . . . . . . . . . . . . . .<5μW
• Low leakage current. . . . . . . . . . . . . . . . . . . . . . . . . 10nA
• Fast switching action
- t_ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28ns
- t_OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns
• Guaranteed break-before-make (ISL43122 only)
• Minimum 2000V ESD protection per method 3015.7
• TTL, CMOS compatible
• Available in SOT-23 packaging
• Pb-Free Available (RoHS Compliant)
Applications
• Battery-powered, handheld and portable equipment
- Cellular/mobile phones
- Pagers
- Laptops, notebooks, palmtops
• Communications systems
- Radios, ADSL Modems
- PBX, PABX
• Test and measurement equipment
- Ultrasound
- Computerized Tomography (CT) Scanner
- Magnetic Resonance Image (MRI)
- Position Emission Tomography (PET) Scanner
- Electrocardiograph
• Heads-up displays
• Audio and video switching
• 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
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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