DATASHEET
ISL43120, ISL43121, ISL43122
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
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
ISL43121
NC/NC
32Ω
40ns/20ns
19Ω
28ns/20ns
11Ω
25ns/17ns
8 Ld SOT-23
ISL43122
NO/NC
32Ω
40ns/20ns
19Ω
28ns/20ns
11Ω
25ns/17ns
FN6033
Rev 7.00
Aug 17, 2015
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 (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
Related Literature
•
TB363
“Guidelines for Handling and Processing Moisture
Sensitive Surface Mount Devices (SMDs)”
•
AN557“Recommended
Test Procedures for Analog
Switches”
•
TB401“Using
the ISL43120 SPST Switch in a Multi-Phase
PWM Power Application”
FN6033 Rev 7.00
Aug 17, 2015
Page 1 of 13
ISL43120, ISL43121, ISL43122
Ordering Information
PART NUMBER
(Notes
1, 2, 3)
ISL43120IHZ-T
PART
MARKING
120Z (Note
4)
TEMP. RANGE (°C)
-40 to +85
-40 to +85
PACKAGE
(RoHS Compliant)
8 Ld SOT-23
8 Ld SOT-23
PKG.
DWG. #
P8.064
P8.064
ISL43121IHZ-T (No longer available, 121Z (Note
4)
recommended replacement:
ISL43120IHZ-T)
ISL43122IHZ-T (No longer available, 122Z (Note
4)
recommended replacement:
ISL43120IHZ-T)
NOTES:
1. Please refer to
TB347
for details on reel specifications.
-40 to +85
8 Ld SOT-23
P8.064
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see product information page for
ISL43120, ISL43121, ISL43122.
For more information on MSL, please
see tech brief
TB363.
4. The part marking is located on the bottom of the part.
Pin Configurations
ISL43120
(8 LD SOT-23)
TOP VIEW
NO
1
1
V+
2
IN
2
3
COM
2
4
8
COM
1
7
IN
1
6
GND
5
NO
2
(Note
5)
ISL43121
(8 LD SOT-23)
TOP VIEW
NC
1
1
V+
2
IN
2
3
COM
2
4
8
COM
1
7
IN
1
6
GND
5
NC
2
NO
1
1
V+
2
IN
2
3
COM
2
4
ISL43122
(8 LD SOT-23)
TOP VIEW
8
COM
1
7
IN
1
6
GND
5
NC
2
NOTE:
5. Switches Shown for Logic “0” Input.
Truth Table
ISL43120
IN1
0
0
1
1
IN2
0
1
0
1
NO1
OFF
OFF
ON
ON
NO2
OFF
ON
OFF
ON
NC1
ON
ON
OFF
OFF
ISL43121
NC2
ON
OFF
ON
OFF
NO1
OFF
OFF
ON
ON
ISL43122
NC2
ON
OFF
ON
OFF
NOTE: Logic “0”
0.8V.
Logic “1”
2.4V.
Pin Descriptions
ISL43120
PIN NUMBER
2
6
3, 7
4, 8
1, 5
1, 6
ISL43121
PIN NUMBER
2
6
3, 7
4, 8
ISL43122
PIN NUMBER
2
6
3, 7
4, 8
1
5
PIN NAME
V+
GND
INx
COMx
NOx
NCx
Ground Connection
Digital Control Input
Analog Switch Common Pin
Analog Switch Normally Open Pin
Analog Switch Normally Closed Pin
FUNCTION
System Power Supply Input (+2.7V to +12V)
FN6033 Rev 7.00
Aug 17, 2015
Page 2 of 13
ISL43120, ISL43121, ISL43122
Absolute Maximum Ratings
V+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 15V
Input Voltages
IN (Note
6)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V)
NO, NC (Note
6).
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V)
Output Voltages
COM (Note
6).
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to ((V+) + 0.3V)
Continuous Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Peak Current NO, NC, or COM
(Pulsed 1ms, 10% Duty Cycle, Max). . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015) . . . . . . . . . . >2kV
Thermal Information
Thermal Resistance (Typical,
Note 7)
JA
(°C/W)
8 Ld SOT-23 Package. . . . . . . . . . . . . . . . . . . . . . . . . . . .
215
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C
Maximum Storage Temperature Range. . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see
TB493
Recommended Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
6. Signals on NC, NO, COM, or IN exceeding V+ or GND are clamped by internal diodes. Limit forward diode current to maximum current ratings.
7.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief
TB379
for details.
Electrical Specifications - 5V Supply
PARAMETER
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
ON-resistance, r
ON
r
ON
Matching Between Channels,
r
ON
r
ON
Flatness, r
FLAT(ON)
NO or NC OFF Leakage Current,
I
NO(OFF)
or I
NC(OFF)
V+ = +4.5V to +5.5V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V (Note
8),
unless otherwise
specified. Boldface limits apply across the operating temperature range, -40°C to +85°C.
TEST CONDITIONS
TEMP
MIN
(°C) (Notes
9, 10)
Full
V+ = 4.5V, I
COM
= 1.0mA, V
NO
or V
NC
= 3.5V
(see
Figure 5)
V+ = 5V, I
COM
= 1.0mA, V
NO
or V
NC
= 3.5V
V+ = 5V, I
COM
= 1.0mA, V
NO
or V
NC
= 1V, 2V, 3V
V+ = 5.5V, V
COM
= 1V, 4.5V, V
NO
or V
NC
= 4.5V, 1V
25
Full
25
Full
Full
25
Full
25
Full
COM ON Leakage Current, I
COM(ON)
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
Turn-OFF Time, t
OFF
Break-Before-Make Time Delay
(ISL43122 only), t
D
Charge Injection, Q
OFF Isolation
Crosstalk (Channel-to-Channel)
Power Supply Rejection Ratio
NO or NC OFF Capacitance, C
OFF
COM OFF Capacitance, C
COM(OFF)
COM ON Capacitance, C
COM(ON)
V
NO
or V
NC
= 3V, R
L
=1kΩ, C
L
= 35pF, V
IN
= 0V to 3V
(see
Figure 1, Note 11)
V
NO
or V
NC
= 3V, R
L
=1kΩ, C
L
= 35pF, V
IN
= 0V to 3V
(see
Figure 1, Note 11)
R
L
= 300Ω, C
L
= 35pF, V
NO
= V
NC
= 3V, V
IN
= 0V to 3V
(see
Figure 3, Note 11)
C
L
= 1.0nF, V
G
= 0V, R
G
= 0 (see
Figure 2, Note 11)
R
L
= 50Ω, C
L
= 5pF, f = 1MHz (see
Figure 4)
R
L
= 50Ω, C
L
= 5pF, f = 1MHz (see
Figure 6)
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V (see
Figure 7)
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V (see
Figure 7)
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V (see
Figure 7)
25
Full
25
Full
Full
25
25
25
25
25
25
25
-
-
-
-
3
-
-
-
-
-
-
-
28
40
20
30
10
3
76
-105
60
8
8
21
75
150
50
100
-
5
-
-
-
-
-
-
ns
ns
ns
ns
ns
pC
dB
dB
dB
pF
pF
pF
V = 5.5V, V
COM
= 1V, 4.5V, or V
NO
or V
NC
= 1V, 4.5V, or
Floating
25
Full
0
-
-
-
-
-
-0.1
-5
-0.1
-5
-0.2
-10
TYP
-
19
23
0.8
1
7
0.01
-
-
-
-
-
MAX
(Notes
9, 10)
UNIT
V+
30
40
2
4
8
0.1
5
0.1
5
0.2
10
V
Ω
Ω
Ω
Ω
Ω
nA
nA
nA
nA
nA
nA
COM OFF Leakage Current, I
COM(OFF)
V+ = 5.5V, V
COM
= 4.5V, 1V, V
NO
or V
NC
= 1V, 4.5V
FN6033 Rev 7.00
Aug 17, 2015
Page 3 of 13
ISL43120, ISL43121, ISL43122
Electrical Specifications - 5V Supply
PARAMETER
POWER SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current, I+
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
INL
Input Voltage High, V
INH
Input Current, I
INH
, I
INL
V+ = +4.5V to +5.5V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V (Note
8),
unless otherwise
specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued)
TEST CONDITIONS
TEMP
MIN
(°C) (Notes
9, 10)
Full
V+ = 5.5V, V
IN
= 0V or V+, all channels on or off
Full
Full
Full
V+ = 5.5V, V
IN
= 0V or V+
Full
2.7
-1
-
2.4
-1
TYP
-
0.0001
-
-
-
MAX
(Notes
9, 10)
UNIT
12
1
0.8
-
1
V
µA
V
V
µA
V+ = +3.0V to +3.6V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V (Note
8),
unless otherwise
specified. Boldface limits apply across the operating temperature range, -40°C to +85°C.
PARAMETER
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
ON-resistance, r
ON
r
ON
Matching Between Channels,
r
ON
r
ON
Flatness, r
FLAT(ON)
NO or NC OFF Leakage Current,
I
NO(OFF)
or I
NC(OFF)
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
Turn-OFF Time, t
OFF
Break-before-make Time Delay
(ISL43122 only), t
D
Charge Injection, Q
OFF-isolation
Crosstalk (Channel-to-channel)
Power Supply Rejection Ratio
NO or NC OFF Capacitance, C
OFF
COM OFF Capacitance, C
COM(OFF)
COM ON Capacitance, C
COM(ON)
POWER SUPPLY CHARACTERISTICS
Positive Supply Current, I+
V+ = 3.6V, V
IN
= 0V or V+, all channels on or off
Full
-1
-
1
µA
V
NO
or V
NC
= 1.5V, R
L
= 1kΩ, C
L
= 35pF,
V
IN
= 0V to 3V (Note
11)
V
NO
or V
NC
= 1.5V, R
L
= 1kΩ, C
L
= 35pF,
V
IN
= 0V to 3V (Note
11)
R
L
= 300Ω, C
L
= 35pF, V
NO
or V
NC
= 1.5V,
V
IN
= 0V to 3V (Note
11)
C
L
= 1.0nF, V
G
= 0V, R
G
= 0ΩNote
11)
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V (See
Figure 7)
25
Full
25
Full
Full
25
25
25
25
25
25
25
-
-
-
-
3
-
-
-
-
-
-
-
40
60
20
30
20
1
76
-105
56
8
8
21
120
200
50
120
-
5
-
-
-
-
-
-
ns
ns
ns
ns
ns
pC
dB
dB
dB
pF
pF
pF
V+ = 3V, I
COM
= 1.0mA, V
NO
or V
NC
= 1.5V
V+ = 3.3V, I
COM
= 1.0mA, V
NO
or V
NC
= 1.5V
V+ = 3.3V, I
COM
= 1.0mA, V
NO
or V
NC
= 0.5V, 1V, 1.5V
V+ = 3.6V, V
COM
= 1V, 3V, V
NO
or V
NC
= 3V, 1V
V+ = 3.6V, V
COM
= 3V, 1V, V
NO
or V
NC
= 1V, 3V
V = 3.6V, V
COM
= 1V, 3V, or V
NO
or V
NC
= 1V, 3V, or floating
Full
25
Full
25
Full
25
Full
25
Full
25
Full
25
Full
0
-
-
-
-
-
-
-0.1
-5
-0.1
-5
-0.2
-10
-
32
40
0.8
1
6
7
0.01
-
0.01
-
-
-
V+
50
60
2
4
8
12
0.1
5
0.1
5
0.2
10
V
Ω
Ω
Ω
Ω
Ω
Ω
nA
nA
nA
nA
nA
nA
TEST CONDITIONS
TEMP
MIN
(°C) (Notes
9, 10)
TYP
MAX
(Notes
9, 10)
UNIT
Electrical Specifications - 3.3V Supply
FN6033 Rev 7.00
Aug 17, 2015
Page 4 of 13
ISL43120, ISL43121, ISL43122
V+ = +3.0V to +3.6V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V (Note
8),
unless otherwise
specified. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
INL
Input Voltage High, V
INH
Input Current, I
INH
, I
INL
V+ = 3.6V, V
IN
= 0V or V+
Full
Full
Full
-
2.4
-1
-
-
-
0.8
-
1
V
V
µA
TEST CONDITIONS
TEMP
MIN
(°C) (Notes
9, 10)
TYP
MAX
(Notes
9, 10)
UNIT
Electrical Specifications - 3.3V Supply
Electrical Specifications - 12V Supply
PARAMETER
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
ON-resistance, r
ON
V+ = +10.8V to +13V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V (Note
8),
unless otherwise
specified. Boldface limits apply across the operating temperature range, -40°C to +85°C.
TEST CONDITIONS
TEMP
(°C)
Full
V+ = 10.8V, I
COM
= 1.0mA, V
NO
or V
NC
= 10V
25
Full
r
ON
Matching Between Channels,
r
ON
V+ = 12V, I
COM
= 1.0mA, V
NO
or V
NC
= 10V
r
ON
Flatness, r
FLAT(ON)
NO or NC OFF Leakage Current,
I
NO(OFF)
or I
NC(OFF)
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
Turn-OFF Time, t
OFF
Break-before-make Time Delay
(ISL43122 only), t
D
Charge Injection, Q
OFF-isolation
Crosstalk (Channel-to-channel)
Power Supply Rejection Ratio
NO or NC OFF Capacitance, C
OFF
COM OFF Capacitance, C
COM(OFF)
COM ON Capacitance, C
COM(ON)
POWER SUPPLY CHARACTERISTICS
Positive Supply Current, I+
V+ = 13V, V
IN
= 0V or V+, all channels on or off
Full
-1
-
1
µA
V
NO
or V
NC
= 10V, R
L
= 1kΩ, C
L
= 35pF, V
IN
= 0V to 4V
(Note
11)
V
NO
or V
NC
= 10V, R
L
= 1kΩ, C
L
= 35pF, V
IN
= 0V to 4V
(Note
11)
R
L
= 300Ω, C
L
= 35pF, V
NO
or V
NC
= 10V,
V
IN
= 0 to 4V
C
L
= 1.0nF, V
G
= 0V, R
G
= 0(Note
11)
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
R
L
= 50Ω, C
L
= 5pF, f = 1MHz
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V (see
Figure 7)
25
Full
25
Full
Full
25
25
25
25
25
25
25
-
-
-
-
0
-
-
-
-
-
-
-
25
35
17
26
2
5
76
-105
63
8
8
21
15
-
-
-
-
-
-
35
55
30
50
ns
ns
ns
ns
ns
pC
dB
dB
dB
pF
pF
pF
V+ = 12V, I
COM
= 1.0mA, V
NO
or V
NC
= 3V, 6V, 9V
V+ = 13V, V
COM
= 1V, 12V, V
NO
or V
NC
= 12V, 1V
V+ = 13V, V
COM
= 12V, 1V, V
NO
or V
NC
= 1V, 12V
V = 13V, V
COM
= 1V, 12V, or V
NO
or V
NC
= 1V, 12V, or
floating
25
Full
25
Full
25
Full
25
Full
25
Full
MIN
(Notes
9, 10)
0
-
-
-
-
-
-
-0.1
-5
-0.1
-5
-0.2
-10
TYP
-
11
15
0.8
1
1
-
0.01
-
0.01
-
-
-
MAX
(Notes
9, 10)
UNIT
V+
20
25
2
4
4
6
0.1
5
0.1
5
0.2
10
V
Ω
Ω
Ω
Ω
Ω
Ω
nA
nA
nA
nA
nA
nA
FN6033 Rev 7.00
Aug 17, 2015
Page 5 of 13
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