ISL5120, ISL5121, ISL5122, ISL5123
®
Data Sheet
November 17, 2004
FN6022.6
Low-Voltage, Single Supply, Dual SPST,
SPDT Analog Switches
The Intersil ISL5120, ISL5121, ISL5122, ISL5123 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
Features
• Improved (lower R , faster switching), pin compatible
replacements for ISL84541–44
ON
• Fully specified at 3.3V, 5V, and 12V supplies
• ON resistance (R ) . . . . . . . . . . . . . . . . . . . . . . . . . 19Ω
ON
• R
ON
matching between channels . . . . . . . . . . . . . . . . . ≤ 1Ω
currents (100pA max), and fast switching speeds (t
OFF
= 28ns,
= 20ns). Cell phones, for example, often face ASIC
ON
• Low charge injection. . . . . . . . . . . . . . . . . . . . . . . . 5pC (Max)
• Single supply operation . . . . . . . . . . . . . . . . . .+2.7V to +12V
t
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
The ISL5120, ISL5121, ISL5122 are dual single-pole/single-
throw (SPST) devices. The ISL5120 has two normally open
(NO) switches; the ISL5121 has two normally closed (NC)
switches; the ISL5122 has one NO and one NC switch and
can be used as an SPDT. The ISL5123 is a committed SPDT,
which is perfect for use in 2-to-1 multiplexer applications.
• Guaranteed break-before-make (ISL5122/ISL5123 only)
• Minimum 2000V ESD protection per method 3015.7
• TTL, CMOS compatible
• Available in SOT-23 packaging
• Pb-Free Available (RoHS Compliant)
TABLE 1. FEATURES AT A GLANCE
Applications
ISL5120
ISL5121
ISL5122
ISL5123
• Battery powered, handheld, and portable equipment
- Cellular/mobile phones
Number of
Switches
2
2
2
1
- Pagers
SW 1/SW 2
NO/NO
NC/NC
NO/NC
SPDT
- Laptops, notebooks, palmtops
3.3V R
32Ω
32Ω
32Ω
32Ω
ON
• Communications systems
- Military radios
- PBX, PABX
3.3V t /t
40ns /20ns 40ns /20ns 40ns /20ns 40ns /20ns
19Ω 19Ω 19Ω 19Ω
28ns/2y0ns 28ns/20ns 28ns/20ns 28ns/20ns
11Ω 11Ω 11Ω 11Ω
25ns/17ns 25ns/17ns 25ns/17ns 25ns/17ns
ON OFF
5V R
ON
5V t /t
ON OFF
• Test equipment
- Ultrasound
- Electrocardiograph
12V R
ON
12V t /t
ON OFF
8 Ld SOIC,
8 Ld SOT-23
8 Ld SOIC,
8 Ld SOT-23
8 Ld SOIC,
6 Ld SOT-23
• Heads-up displays
Packages
• Audio and video switching
• Various circuits
Related Literature
- +3V/+5V DACs and ADCs
- Sample and hold circuits
- Digital filters
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
- 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.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002-2004. All Rights Reserved
1
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